- Actor-Inspired Element: According to an interview with Jim Carrey, he says that the gag of Fletcher chasing his son as "The Claw" was something Carrey's father did to him and his siblings. He also came up with the idea for the closing scene. He woke Tom Shadyac up in the middle of the night to tell him about it.
- Deleted Role: Randall 'Tex' Cobb, has a cameo in this movie talking about returning a jacket he had borrowed from Fletcher. He also had a whole character in the movie but the scene was later deleted.
- Deleted Scene: The deleted scene shows Fletcher in court, managing to convince an entire jury that a thug who robbed an old man and assaulted a female officer was the real victim in the whole fiasco. The scene was cut likely because the filmmakers feared it would make Fletcher too unlikable, though some have pointed out that we actually get to see how great of a lawyer he actually is, rather than just hear about it.
- Fake American: British Cary Elwes as Jerry does a pretty convincing American accent.
- In Memoriam: The film was dedicated to Jason Bernard, who played Judge Marshall Stevens. Bernard died of a heart attack shortly after filming had finished.
- Method Acting: The scene where Fletcher beats himself up in the bathroom was Jim Carrey genuinely doing just that.
- Missing Trailer Scene: One trailer included moments from a deleted opening scene in which Fletcher unscrupulously defends an obviously guilty Mr. Skull against a terrified old man in court.
- Uncredited Role: Judd Apatow was an uncredited script doctor for the screenplay.
- What Could Have Been:
Trivia / Liar Liar