The gunfight between Matt Dillon and an unknown gunman that opened every episode was shot on the same main street as that used in High Noon (1952). During one filming of this gunfight, as a joke on everyone else, James Arness let the gunman win. With the anti-violence movement of the early 1970's, the opening gunfight was dropped, replaced by Matt riding his horse.

Slated to be canceled in 1967 due to low ratings, but then-CBS president William Paley reversed the decision. He moved the show from Saturdays to Mondays (cancelling Gilligan's Island (1964) in the process), placing it back in the Nielsen's Top Ten (Paley and his wife were both big fans of the show).

James Arness received his draft notice in 1943 and trained at Camp Wheeler, Georgia, before shipping out for North Africa. He was assigned to the 3rd Infantry Division in time for the invasion of Anzio. Ten days after the invasion, Arness was severely wounded in the leg and foot by machine-gun fire. His wounds: he lost part of his foot. It plagued him the rest of his life. The injury made it difficult for him to walk for extended stretches. When shooting movies or TV shows, any scenes that required extensive walking would be shot early in the morning, before his feet and knees started giving out. The wounds resulted in his medical discharge from the army. He received the Bronze Star; the Purple Heart; the European-African-Middle Eastern Campaign Medal with three bronze campaign stars; the World War II Victory Medal and the Combat Infantryman Badge for his service.

All four senior officers of the original "Star Trek" appeared in separate episodes: 'William Shatner (I)' (Captain Kirk) was in Gunsmoke: Quaker Girl (1966). Leonard Nimoy (Mr. Spock) was in four. They were Gunsmoke: A Man a Day (1961), Gunsmoke: The Search (1962), _"Gunsmoke" (1955) {I Call Him Wonder (#8.28)_ & Gunsmoke: Treasure of John Walking Fox (1966). DeForest Kelley (Dr. McCoy) was in _"Gunsmoke (1955) {Indian Scout (#1.23)_, and James Doohan (Scotty), in Gunsmoke: Quint Asper Comes Home (1962).

In the radio series, Kitty Russell was a madam for prostitutes. In the first couple of seasons, there were some hints at that on the TV series. James Arness explained on the DVD commentary that after the first couple of seasons, they decided to drop those references to make the show more family friendly, and so Kitty became just a lady saloon owner.

This show, along with The Life and Legend of Wyatt Earp (1955), helped launch the great era of the TV western. Westerns became so popular on TV that by the end of the 1950s there would be as many as 40 of them airing in prime time.

James Arness and Milburn Stone are the only two regulars to stay with the show for its entire 20-year, 635-episode duration on CBS. There was one brief exception in 1971. Milburn Stone suffered a heart attack, and Pat Hingle, portraying Dr. John Chapman, replaced Stone for 6 episodes while he recovered.

According to a TV Guide article published in the August 23, 1975 issue (just before the show left the air), 26 actors screen-tested for the role of Matt Dillon. William Conrad (voice of radio's Matt Dillon) was one, but didn't look the part. Raymond Burr sounded great, but according to producer-director Charles Marquis Warren: "he was too big; when he stood up his chair stood up with him" (Burr later lost considerable weight to play Perry Mason)). John Pickard almost made it, but did poorly in a love scene with Kitty (he later guest-starred a few times in various roles). Warren and producer Norman MacDonnell stoutly denied that they even considered major film star John Wayne - but they went with James Arness, who looked and sounded a LOT like Wayne. When Arness was reluctant to take the role, Wayne persuaded him and even agreed to introduce the first episode.

When Dennis Weaver announced that he was leaving the show, it was director Andrew V. McLaglen's suggestion that Ken Curtis be brought in for a tryout as Festus Haggen in a few episodes. McLaglen had directed Curtis in a similar role in an episode of Have Gun - Will Travel (1957). "Festus" was given the job of deputy to make him different from Weaver's character of Chester Good (who was never a deputy).

At 20 years and 635 episodes, the longest-running American prime-time drama television series to date. (2013)

After sixteen seasons, the producers decided to let Milburn Stone choose Doc's first name. Stone chose Galen, which was the surname of an ancient Greek physician and medical researcher. In season 10 episode 21 SONG FOR DYING, Theodore Bikel's character "the Singer" calls Doc Adams "GALEN" and Doc calls the singer Martin Kellums.

Denver Pyle and Raymond Burr were both considered for the role of Matt Dillon.

No one told the cast about the series being canceled. Many of them read about it in the trade publications.

Buck Taylor, who played Newly, was also requested by Jack Lord for the role of Dan "Danno" Williams on Hawaii Five-O (1968) at the same time he was up for the role of Newly O'Brian.

Originated in a 30-minute format, later expanding to 60 minutes.

When the show first aired in the United Kingdom, it was known as "Gun Law". This meant that the opening title sequence had to be re-filmed. Comedy writer Dick Vosburgh was picked to double for James Arness, due his similar height and build.

The actress originally offered the part of Miss Kitty, Polly Bond (aka Polly Ellis), turned it down due to her recent (at the time) marriage to actor Tommy Bond in 1953.

In Spanish-speaking countries, the series is known as La ley del revólver ("The Law of the Gun").

Dennis Weaver felt his first audition for Chester did not go well, so he begged them to let him do it again, but this time with his famous country accent. He got the part.

Dennis Weaver stated on his commentary about his time on Gunsmoke, that he seriously regretted giving Chester his limp. He hadn't realized how much work it would become to maintain in everything Chester did.

The series was set in the 1870s. Kansas entered the Union in 1861. The Marshals Service provided local law enforcement in territories, not in states. The duties Matt Dillon performed would have been handled by a town Marshal or county sheriff (in this case, Ford County). Each state (or federal court district) had one US Marshal, who was in charge of all the Deputy US Marshals in that particular jurisdiction; Matt Dillon would have been a Deputy US Marshal.

According to "The Complete Directory to Prime Time Network and Cable TV Shows" (8th Edition, pg. 495), John Wayne was the first choice to play Marshal Matt Dillon, but he declined because he did not want to commit to a weekly TV series. He did, however, recommend his friend James Arness for the role, and gave the on-camera introduction in the pilot.

Gary Busey's character Harve Daley was the last man killed on the show.

Three of the children from "The Brady Bunch" appeared in episodes: Christopher Knight ("Peter Brady") acted in Gunsmoke: The Miracle Man (1968). 'Eve Plumb (I)' (middle sister, Jan Brady) acted in "Gunsmoke (1955) {Gold Town (#14.18)}_, and Susan Olsen (Cindy Brady) was in two, they were Gunsmoke: Abelia (1968) & _"Gunsmoke" (1969) {A Man Called Smith (#15.6)_.

Festus and Doc had a love hate relationship. Festus would refer to Doc as "you ol' schutter you", and would often ask Doc to have a drink or share a last drink for the night, hoping the end result would be Doc paying for the drinks because Festus would always have a reason to not have enough money to buy them both one. Festus tried doing the same relationship with the "sub" doc for the six episodes filling in, while in real life Doc was recovering from a heart attack, but the bond between Festus and Doc was too strong to replace, even for the short amount of time Doc (Stone) was out.

"Gunsmoke" was created by writer John Meston and producer Norman MacDonnell as a radio series that premiered on CBS in 1952. Many of the early television episodes are adaptations of Meston's radio scripts. The radio series ran for more than 400 episodes and lasted until 1961.

In the radio version, Chester's last name was Proudfoot, but when the show moved to TV his last name was changed to Goode.

James Arness almost didn't take the part of Matt. People in the industry were telling him not to out of fear that it would hurt his chances for a movie career if the TV show failed. After having a long talk with his good friend, John Wayne, he decided to accept the role.

"Get the hell out of Dodge" is a reference to Dodge City, Kansas, which was a favorite location for westerns in the early to mid 20th century. Most memorably, the phrase was made famous by the TV show "Gunsmoke," in which villians were often commanded to "get the hell out of Dodge." The phrase took on its current meaning in the 1960s and 70s when teenagers began to use it in its current form.

Festus always wore his hat slightly to the right, placing it on his right ear to cause his ear to stick out slighty, sort of a " floppy ear", look.

During the last ten years of the series, James Arness was suffering from severe arthritis, which got so bad that all his scenes for each episode were shot on a single day, allowing Arness to rest and recuperate in between.

The beginning sequence with Matt walking around through the graves on Boot Hill and giving the opening narration was taken directly from the radio series.

The cast of the radio version was totally different than the television version. Playing the main roles were William Conrad as Matt, Georgia Ellis as Kitty, Howard McNear as Doc and Parley Baer as Chester. In fact, with the exception of Conrad, many felt that the radio cast were going to reprise their roles on the televised version.

Dennis Weaver said on the DVD commentary that the reason Chester doesn't carry a gun on him was because they wanted him to be non-violent. He also said that because he was supposed the sidekick, they told him that Chester needed something to separate himself from Matt. So Weaver came up with the idea of giving Chester his famous limp.

The series was the final film project of Glenn Strange.

Ken Curtis played on a previous episode as a Texas cattleman who befriended Chester, and was killed at the end of the episode

Dennis Weaver was the first actor cast. Weaver said on the DVD commentary that he knew they were leaning towards James Arness for Matt, but he was in the Bahamas at the time filming a movie with John Wayne. They went ahead and started casting the other parts, so he ended up being the first one officially chosen for the TV series.

In the series' twenty seasons, Matt Dillon kissed only one lady: Michael Learned of The Waltons (1971) fame, in Gunsmoke: Matt's Love Story (1973).

Rumor has it that Rex Koury had so little time to pen the theme song that he hastily scribbled it while in the bathroom. It was originally written for "Gunsmoke" when it was a radio show and later adapted for TV.

In Steven Spielberg's 1971 TV-movie "Duel", Dennis Weaver's character stops at a filling station. As he drives off, the character who fills up his car is seen, from a distance, walking back towards the station, walking in a stiff-legged limp, like Weaver's Chester Goode "Gunsmoke" character.

In the show's 20 year run, James Arness was the only actor to appear in every episode of the series.

Ken Curtis also appeared as an Indian in an original 30 minute episode.

Country songs have refrence to Dillion never putting his boots under Kitty's bed.

It was originally produced for the CBS Television Network by Filmcrafters at the Producers Studio (now the Raleigh Studio). Around 1960, CBS took over production and moved it to KTLA Studios, then owned by Paramount Pictures. Around 1963 production was moved to CBS Studio Center, formerly Republic Studios, where it remained for the rest of the show's run. Starting around 1970, CBS produced it in association with The Arness Company (James Arness). Originally syndicated by CBS Films and then by its successor, Viacom, now Paramount Television.

Contrary to popular belief, Chester Goode was not a Deputy. However, that job was bestowed upon Festus Hagen.

Doc Adams first name on the show was Galen. However, on the radio version of the show his name was Charles.

Some have rumored that the role of Chester and his limp or stiff leg was created using a rock placed in his boot to help it seem more realistic.

James Arness was 32 years old when the show started.

Doc's first name of Galen was probably inspired by the Greek physician and philosopher of the same name who lived from 129 A.D. to around 200 A.D..