- AFI's 100 Years 100 Laughs: #47.
- Cut Song: Paul Simon, who wrote the score for the film, also wrote a title song, "Have A Good Time," but Warren Beatty convinced Hal Ashby to ditch the song in favor of The Beach Boys' "Wouldn't It Be Nice," because Beatty was convinced Simon's song set up his character as being purely superficial, hence one-dimensional. In consequence, Simon included the song on his multi-Grammy winning Still Crazy After All These Years album instead.
- Extremely Lengthy Creation: Robert Towne wrote (and continually rewrote) the screenplay for this film eight years before it was finally produced,
- Irony as She Is Cast: Julie Christie, in real life an outspoken activist for various causes, playing a superficial gold-digger.
- Reality Subtext: The scene where Jackie walks out on George was apparently based on what happened with Robert Towne and his then-girlfriend.
- Real Life Writes the Hairstyle: In her 2016 autobiography, The Princess Diarist, Carrie Fisher reveals that because her character claims she had never had her hair done, her real-life hair was deemed too short and she had to wear a wig. However, the wig wasn't very convincing, and therefore a headscarf was added.
- Romance on the Set: Lee Grant claimed in her 2014 autobiography that "everyone knew" Goldie Hawn and Warren Beatty were sleeping together, even though he was still involved with Julie Christie.
- Saved from Development Hell: Robert Towne and Warren Beatty started working on the script in 1968, but it took years for them to find financing. One result was that even though it was meant to be a contemporary story originally, by the time they actually filmed it they just kept the 1968 setting and made it a period piece.
- Typecasting: Notorious womanizer Warren Beatty playing notorious womanizer George.
- Unintentional Period Piece: An interesting double example, since it's a portrayal of Los Angeles in The '60s, as viewed from The '70s.
- Working Title: When Warren Beatty conceived idea for this film in 1967, it was called Hair (later changed to avoid confusion with the rock musical).
- Written By Castmember: Warren Beatty co-wrote the script with Robert Towne.
Trivia / Shampoo