Jim and Edith walk in front of Floyd's Barber Shop, the same building adjacent to the sheriff's office of Mayberry, NC.
Rollin Hand, posing as a Doctor, orders "5 cc's of Cordrazine" for Raymond Barrett. This is the same fictional drug with which Dr. McCoy is accidentally injected in the episode "City on the Edge of Forever".
Captain Kirk and Spock once again travel back in time through the Guardian of Forever.
Captain Janeway refers to 20th century technology as "stone knives and bearskins."
Episode is named after this episode of Star Trek, on top of that someone wears the same outfit from Star Trek.
Episode mentioned by Mark in his office when talking to William Shatner. Also mentioned by Mark at Robert's apartment.
The "Star Trek" cast arrive through the Guardian of Forever. William Shatner's final line is "Let's get the hell outta here."
Frasier buys Noel Joan Collins' wig as an apology gift
A replica of the Guardian of Forever was displayed at the Minnesota convention.
The Gateway to the past appears again
Alana mentions Edith Keeler, McCoy uses cordrazine on Sulu again.
The Guardian of Forever causes another time paradox
The player speaks to the Guardian, from this episode.
When Sheldon dreams he's on Vulcan, the Guardian of Forever appears in the background
When Harvey asks Mike if he knows how they won World War II, Mike replies that it is because "Spock didn't let Kirk save Joan Collins from getting hit by that car"; this is a reference to the Star Trek episode "The City on the Edge of Forever". Mike then asks Harvey if he is Spock or Kirk, but Harvey replies that he is Uhura.
Mentioned in dialogue.
The Guardian of Forever appears and a newspaper clipping about Edith Keeler is part of the many images seen through the Guardian.
Dialog and character
Edith Keeler appears in this game.
Crane mentions the episode.
William Shatner says this is one of his favorite episodes
"The City on the Edge of Forever" is one of the books in Captain Georgiou's ready room.
A clip from 'The City on the Edge of Forever' is shown in 'Cosmic Thoughts'.
Brief clip of Joan Collins shown
Episode is a parody of this episode of Star Trek with JFK in place of Kirk's love interest.