According to those who knew him, Bela Lugosi never used profanity.
None of the scenes where Ed Wood meets various members of his acting troop ever took place in real life. The film's screenwriters wanted to include such true-to-life stories, but during their research they learned that Wood's friends were so obscure that there was little overall information about them, let alone anything that specific. However, the data that was gleaned in this process turned out to be very useful, as many "fun facts" became part of the final script (for example, Criswell's origin story was eclipsed by the true tale of how he bought his trademark Cadillac from Mae West).
Dolores' hairdo changes between the time of her fit at the party and the time she's outside and Ed is running after her.
As a sight gag, during the premiere of Plan 9 from Outer Space, Tor Johnson is shown sitting with his wife and two very chubby children. In reality, by the time "Plan 9" was made, Tor's son, Karl, was an adult working as a police officer. Karl had supplied the uniforms and police car for the production of "Plan 9 From Outer Space".
Ed Wood and Orson Welles never met.
Ed Wood is depicted as the first to approach pro-wrestler The Super Swedish Angel (Tor Johnson) about appearing in movies. In fact, the real Tor Johnson had been appearing in numerous films since the 1930s.
The sign on the "Screen Classics" building is designed in the Chicago font, which was designed by Apple Computer in 1983, thirty years after the film takes place.
The camera used during dialogue scenes is a Mitchell NC using a notoriously loud 'coffee-grinder' motor. Normally, for dialogue scenes, this camera would have been placed inside a sound-proof 'blimp' housing and used with a sync motor.
When Ed takes Lugosi home after first meeting him, Bela disdainfully says that modern horror movies only show big bugs, giant spiders, giant grasshoppers and the like. But in fact, Hollywood did not begin producing giant-insect films until 1954 - about two years after Wood and Lugosi first met.
When Ed visits Bela Lugosi's home, sidewalk outside his house appears and disappears depending on whether camera is aimed at exterior of house or is depicting Lugosi's view from front door, indicating two different houses were used for scene.
Bela says he is 74 years old. When he died he was 73.
The film depicts the premiere of "Plan Nine From Outer Space" as taking place at the famous Pantages Theatre in Hollywood. The preview was actually held at the Carlton Theatre in Los Angeles.
Ed and Bela are watching a 1958-1960 Philco Predicta television, but when we see the movie they're watching on the TV screen, it's a mid-50s Packard-Bell television.
Dolores' hair is shorter and in a different style when she runs out of the wrap party.
The shot of the audience at the TV show on which Lugosi appears is actually the same shot of the audience attending the premiere of "Plan 9 From Outer Space", used near the end of the film.
When Lugosi performs on the street in front of a theater, the window marquee for the current feature is for the low budget John Carradine film Half Human, which was not released in the US until December 1958. Lugosi died in 1956.
"Que, Sera, Sera" is played at the wrap party; that song did not come out until 1956.
When Ed Wood first meets Bela Lugosi they are shown in a convertible and as they are driving you can see very modern, steel high tension utility poles along with mercury vapor street lamps that were not in common usage until at least the late 1960s.
At the time Plan 9 from Outer Space was filmed, Orson Welles was very fat and had a chubby face, but Vincent d'Onofrio plays the slimmer Welles of earlier years.
During both scenes where Ed Wood is resting on the bench at the sanitarium, the same car drives down the street as seen through the window in the back.
In a screening room, Ed calls back to the projectionist to show the footage again. At which point, the projector (the same projector) immediately restarts although the film has not been rewound and rethreaded.
In the scene where Ed Wood meets Orson Welles, Ed asks him what he's working on. Welles takes a cigar out of his mouth with his right hand. When they cut to a frontal view of Welles, he's holding the cigar with his left hand. When they cut back to a frontal view of Wood, Welles puts the cigar in his mouth with his right hand.
During the "Plan 9" premiere, the footage of Lugosi is shown in its context of that film. However, the narrator's voice heard is the real voice of Criswell and not Jeffrey Jones, the actor portraying him.
When Ed and Kathy emerge from the theatre after the showing of Plan 9, their convertible has been sitting with the top down in pouring rain. Ed opens the passenger door and water pours out of the car, yet when he opens the driver's door seconds later, no water drains from it.
When Bela's morphine addiction becomes apparent, he starts rolling down and buttoning his sleeves so he can put his coat on. He only rolls down the right cuff. The next time the camera is on him, his left sleeve is rolled down, buttoned, and his coat is on. There was not enough time between to accomplish this task.
Lugosi's two dogs disappear and reappear in his lap while he and Ed are watching Vampira's movie.
At Boardner's in 1953, when Ed's play is reviewed, a 1955 Chevrolet is parked at the front door.
When Ed is shooting his last footage of Lugosi outside of his house, when the camera is on Lugosi there is a walkway, but when the camera is on Ed, there isn't one. This is only visible in the fullscreen version.
A 1956 Nash Rambler Station Wagon goes in the opposite direction on the way to Bela Lugosi's house in 1952.
Although "Glen Or Glenda" was made in 1953, both a 1955 and 1956 Ford can be seen in the background while they're shooting the film, as well as a 1956 Dodge, and other late-'50's cars.
At the start of the world war two theater production Ed can be seen miming the dialog in the background, however when the camera moves to a close up position of him, his left hand has changed positions.
Ed and Bela are shown watching the movie "White Zombie" on "The Vampira Show" on Halloween. According to the IMDb, that episode ran on 6/5/54, almost 5 months before Halloween.
The fact is, "angora" (the wool used for Ed Wood's pullover) is not "made from specially-bred rabbits that live in the Himalayas" as it said in the movie. The rabbit is from the region of Ankara, the capital city of Turkey (formerly known as "Angora"). There are angora cats and angora goats from this region as well.