On the DVD commentary track, the actors note that Tim Curry's characterization of Pennywise was so creepy and realistic that everyone avoided him during the filming.
The night guard in the asylum is called Koontz, named after Stephen King's rival author Dean R. Koontz.
Jarred Blancard (young Henry Bowers) hated having to call Marlon Taylor (young Mike Hanlon) a "nigger", and would often apologize to him before and after filming for his character's excessive use of the slur.
Tommy Lee Wallace felt that Part 2 wasn't as good as Part 1, because the adults weren't as magnetic to watch, especially when it came time to battle Pennywise.
On the day the kids go into the sewers, it was actually raining, saving the production crew the trouble of having to fake it.
When Beverly is listening to the voices in the drain, one boy identifies himself as Matthew O'Connor. Matthew O'Connor is also the name of the Supervising Producer of the film. A girl in the drain identifies herself as Vicky Burrows. Victoria Burrows did casting for the movie.
Tim Curry was reluctant to take the role of Pennywise initially because he didn't relish the thought of being buried under so much makeup. When he played Darkness in Legend (1985), it was a difficult and demanding role, and the hours in makeup was still fresh in his mind. To compromise, Tommy Lee Wallace minimized the amount of makeup on Curry, and a lot wasn't necessary anyway because Curry's performance was so strong.
In the movie the words "Beep beep, Richie" are often used. In the novel it is explained that this phrase is meant to get Richie to shut up.
To get the effect of "It" moving through the pipework, a dolly crane was built and pushed through the piping. It was a difficult shot to get right because it was so cramped. It was also done from "It's" point-of-view because Tommy Lee Wallace believed that what we imagine is often scarier than what we see, a trick he learned from his old mentor, John Carpenter.
When the balloon appears in Ben's taxi, John Ritter was turning it with his finger, off-camera.
Michael Cole (adult Henry) got so much into the scene where he's trying to kill Mike that it was difficult for John Ritter and Dennis Christopher to pull him off of Tim Reid.
When Beverly goes back to the house she grew up in, Tommy Lee Wallace wanted Annette O'Toole alone on the street, without any other actors or extras around to make it creepier. Also, when she meets Mrs Kersh, he filled the scene with incidental details to illustrate to the audience that there's something wrong in this house, e.g. her teeth are all rotten, just like Pennywise's.
The actors were injured slightly during the library scene what with so many objects flying around at once. It was filmed in one take but they managed to completely wreck the set.
The blood oozing over Georgie's photo was quite unusual to see in a TV movie in 1990. It (1990) paved the way for TV movies and mini-series in the future to push the envelope far more than ever before.
John Ritter retained one of the playing cards with Pennywise's face on it after filming wrapped.
A lot of Eddie's meds in the film belonged to Dennis Christopher. In fact Tommy Lee Wallace allowed the actors to bring things from their normal lives on set.
The weird furniture in Stan's house was meant to signify that something is 'off' in Stan's life.
When Bill sees Georgie and Beverly sees her father in the sewer, it was all done in one continuous shot, with Tony Dakota and then Frank C. Turner appearing when needed.
When Pennywise appears as a ghostly image in the sewers, Tommy Lee Wallace originally wanted the roots growing down to begin writhing around him, something Eddie hopes they wouldn't start doing. The budget didn't allow it, however, and Wallace thought the effect they had to use instead was rather cheesy to look at.
In the scene with Pennywise (Tim Curry) and Georgie (Tony Dakota), Curry was so in character that Dakota remarked "Tim, you're scaring me". Curry responded with "Gee I'm so sorry, but that's what I'm supposed to be doing. And you're supposed to be scared".
Since It first aired, there has been much speculation as to the sewer building pump house. Fans wanted to know the location of the real building and rumor was that it was a built set that had been immediately torn down after filming. The real building is actually the old Buntzen Lake Hydro Plant in Canada, which looked vaguely different in 1990 but after it shut down in the early 2000's now retains a more faded look. People can go up to it, but are prohibited from going inside without authorization.
All of the cast have fond memories of working on It (1990), saying it was one of the best experiences of their lives on the DVD commentary. This was mirrored almost 30 years later, when all the kids who worked on It (2017) called the three-month shoot the best summer of their lives, and claimed that they were all best friends onscreen and in real life.
Suzie Payne, Ben's cab driver, was really a stand-up comic. John Ritter said she was one of the funniest women he had ever met.
Jonathan Brandis and John Ritter both died tragically in 2003. Brandis hung himself, while Ritter suffered an unexpected, fatal aortic dissection.
Pt 1 was the fifth highest rated program on Sunday, November 18th, with an 18.5 rating and watched in 17.5 million households. Pt 2 was the second highest rated program on Tuesday, November 20th, with a 20.6 rating and watched in 19.2 million households.
The scene where Mike takes a photo of the kids on a machine was improvised on the day of filming because time was running short to finish the movie.
The adult actors had to be careful what they touched during the sewer scenes because the place was so rusty, there was a very real danger of tetanus infection. Because of that, it was not a fun scene to film.
Most of Stephen King's books take place in Maine in the Bangor area and in a fictionalized town. The book was written and finished in Bangor also.
Bill is the author of a horror novel titled "The Glowing". This may refer to Stephen King's "The Shining".
Tommy Lee Wallace is a former protégé of John Carpenter's. It (1990) pays homage to Carpenter films like The Fog (1980) and Halloween (1978). Richard Masur was in Carpenter's The Thing (1982).
The Chinese restaurant scene was Richard Thomas' favourite scene in the movie. It was filmed in three days. There were puppeteers under the table working Pennywise's fortune cookies. The scene was shot on a handheld camera to make it scarier.
Stephen King's novel IT is connected to his Dark Tower universe. The novel has an image of a turtle supporting the earth. A poem explaining this, "See the Turtle of enormous girth/ Upon his back he holds the Earth," appears in both IT and the third Dark Tower novel, The Waste Lands. That book also expands on the idea of multiple dimensions, each guarded by an animal avatar, held together by the Dark Tower in the center, rather like the spokes of a wheel. The final Dark Tower novel, The Dark Tower, features a character named Mordred who, like Pennywise, shifts from human to spider form, and another character, Dandelo, who, like Pennywise, has "deadlights" behind his eyes that will drive a mortal to madness. Stephen King has stated that Mordred is not Pennywise, but that the two may be the same species (in the novel, Pennywise is revealed to be a pregnant female, therefore opening up the possibility for multiple Its) The character Mike Hanlon appears in both IT and Insomnia, which introduces Dark Tower character Patrick Danville.
Tim Curry had the earliest call times, before any of the other actors, because of the long hours he needed to spend in makeup.
Stephen King allowed a lot of flexibility when it came to rewriting much of the novel.
Tommy Lee Wallace admitted he had never read the novel before making the film. He preferred to let the script speak for itself. In the DVD Commentary, Wallace revealed that he did read the novel later on and admitted that he believes the miniseries fell short of the source material.
The asylum orderly, Koontz, drops a roll of coins when he sees Pennywise. Though not covered in the movie, the book explains that Koontz uses quarter rolls to beat the patients as it is as effective as a baton and more compact.
Tim Reid was disappointed that he didn't get to work with the spider puppet like the rest of the cast.
Tommy Lee Wallace's first TV movie. Because it was his first, he tried to get It (1990) as close to perfect as possible. However, he later said he believed they fell short in comparison to King's original novel.
If you notice some scenes (like the final battle), you'll find the use of the green color very easily. Stephen King has said that green is a color that, for him, represents death, unease, or the supernatural. It's also been used by the author in other books, and by directors in movies based on his books. This is generally thought of as an influence from H.P. Lovecraft.
When ABC and Lorimar first announced the film, it was to be a 10 hour miniseries directed by George A. Romero. Romero did extensive pre-production work and closely collaborated with Lawrence D. Cohen to develop the script, but he had to bow out due to a scheduling conflict with the remake of Night of the Living Dead (1990). This mirrored Romero's experience on another Stephen King property, the previous year's Pet Sematary (1989), which he was also slated to direct.
The receptionist at the Derry Inn is seen reading 'The Glowing' when the group leaves, which is supposedly written by Bill.
The actress playing Ben's date filmed her scenes in one day. She mistook John Ritter for Beau Bridges.
When the balloon bounces away from Beverly outside of her old house, it was being reeled in by a pulley and a fishing-rod from down the street.
The scene where we meet the adult Richie is Tommy Lee Wallace's favourite shot in the movie, because it runs on for so long.
According to Tommy Lee Wallace on the Director's DVD Commentary, making the photo in Mike's album 'come alive' was a difficult scene to shoot.
This film came out in 1990, the same year that Bill Skarsgård was born. Skarsgård would go on to play Pennywise in It (2017).
The young Richie, played by Seth Green, was menaced by a werewolf during the movie. Years later in his career, he coincidentally played a werewolf during Buffy the Vampire Slayer (1997).
Roddy McDowall and Malcolm McDowell were originally considered for the role of Pennywise.
In the novel the group is not referred to as "The Lucky Seven". They call themselves "The Losers Club".
Stephen King dubbed the rock-fight between the "Lucky Seven" and Henry Bowers the "Apocalyptic Rock-Fight" in the novel.
Tommy Lee Wallace wasn't sure about turning Audra from a heroine coming to rescue Bill into a victim who needs to be rescued by Bill. He didn't think it worked dramatically in the movie, or the novel for that matter.
Mrs. Kersh is named after director Irvin Kershner, director of Star Wars: Episode V - The Empire Strikes Back (1980). Stephen King visited the set of that film, which was filmed in the same studio as The Shining (1980). Empire writer Lawrence Kasdan later directed Dreamcatcher (2003). The novel on which that was based also involves children from Derry, and includes a reference to Pennywise.
Some of Brandon Crane's anger at being bullied by Henry Bowers seemed very real to Tommy Lee Wallace.
Loni, one of the girls who teases Beverly outside school, was played by an uncredited Laura Harris, who later acted in films like The Faculty (1998) and Severance (2006).
Although the members of the Losers' Club are all supposed to be the same age (41 years), the actors who played them as adults ranged widely in age. At time of filming, the youngest, Dennis Christopher was 34, Harry Anderson 37, Annette O'Toole 38, Richard Thomas 39, John Ritter and Richard Masur both 41, and the oldest, Tim Reid, was 45.
The movie the children are watching when they drop drinks and popcorn on the bullies is I Was a Teenage Werewolf (1957).
Some of the actors playing the "Lucky Seven" had acted together before It (1990). E.g John Ritter had played a preacher in The Waltons (1971). It made for a more comfortable atmosphere on-set.
In the scene at the Chinese restaurant when everyone's fortune cookie is showing them something, Mike's exposes the fetus of an unhatched bird. This could refer to the scene in the novel when It attacks young Mike in the shape of a giant bird.
Jonathan Brandis was on SeaQuest 2032 (1993), where Seth Green made a few guest appearances. Green's nickname was "Wolfman".
Earlier in 1990, Tim Curry appeared in The Hunt for Red October (1990), which also featured Stellan Skarsgård, whose son, Bill Skarsgård, plays Pennywise in It (2017).
At one point, while running from Henry Bowers and his gang, Richie Tozier (played by Seth Green) accidentally bumps into the school's principal (played by William B. Davis). A few years later, Green portrayed a secondary character in Episode 1x01 of The X-Files (1993), while Davis played the recurring role of 'The Cigarette Smoking Man', the show's main villain.
All of the actors who played the adult versions of The Losers Club have been nominated for either a Emmy or a Golden Globe.
George A. Romero was originally set to direct but had to leave due to scheduling conflicts.
The scene when the "Lucky Seven" promise to come back to Derry if "It" isn't dead was shot by a novice.
In the novel, Officer Nell makes the kids take the dam apart. He's not happy about the dam in the movie, but its unknown whether he makes them do the same.
Chris Eastman appeared in the original The NeverEnding Story (1984), while Jonathan Brandis appeared in The NeverEnding Story II: The Next Chapter (1990).
When Harry Anderson (as adult Richie Tozier) is talking with his manager in L.A. about going back to Deery his manager asks Richie who'll host the tonight show. Remember this was filmed in or around 1990. Richie says "Let Jay Leno". Jay Leno took over the Tonight show in 1992.
The theater scenes racked up many dull hours of waiting and retakes for the child extras. Tim Curry often came onto the stage in full costume and conducted singalongs with the extras, most of whom didn't know who he was. They thought he was actually a clown hired to entertain them.