For the film:
- Dueling-Stars Movie: Adam Sandler and Jack Nicholson.
- Fake Nationality: The German Galaxia/Gary, played by American Woody Harrelson.
- In Memoriam: Lynne Thigpen, who portrayed Judge Daniels, died only a month before the film's release. The film is dedicated to her memory.
- What Could Have Been: Adam Sandler originally tried to get Eddie Murphy for Dr. Buddy Rydell. Robert De Niro, Bill Murray and Dustin Hoffman were considered for the role.
For the TV series:
- The Danza: Charlie Sheen as Charlie Goodson, Martin Sheen as Martin Goodson, Michael Boatman as Michael and Andy Mientus as Andy.
- Meta Casting: The series is overflowing with references to Charlie Sheen's sometimes bizarre past behavior while under the influence of narcotics.
- Real-Life Relative:
- Charlie's dad is played by his real-life dad, Martin Sheen.
- Michael Arden and Andy Mientus (Patrick and Andy) are a real-life couple as well as onscreen.
- Real Life Writes the Plot: Selma Blair was written off the show for complaining about Charlie Sheen's behaviour.