- Acting for Two: Adam Sandler plays Davey, Whitey, Elenore and the sounds of the deer. He also has an uncredited role as the fat, sweaty guy who's jockstrap is fed to the loser for the shirts vs. skins game.
- Actor Allusion: The film's title comes from a line in Adam Sandler's "The Hanukkah Song".
- Approval of God: Seth Kearsley gave The Nostalgia Critic a thank-you tweet to him for reviewing the film, and also sent a lengthy email showing all the hard work that he and all the cast and crew went through.
- Box Office Bomb: Budget, $34 million. Box office, $23.8 million.
- Creator Backlash: Director Seth Kearsley hated the poop-eating reindeer scene and wanted to cut it out, but was forced to leave it in the film due to the positive reaction from the test audiences.
- Creator's Favorite: Amongst the writers, Mrs. Selman ("...with the one extra breast"). Apparently, they thought it was so funny that they gave her some more scenes.
- Creator Killer:
- Seth Kearsley's first feature wound up being his last. He's since stuck to television.
- It was the only film to be produced by Meatball Studios, the animation arm of Adam Sandler's production company, and Sandler's only involvement in animation until Hotel Transylvania a decade later.
- Cut Song: While the final film already has a notorious amount of Product Placement, at one point Whitey sang a whole song about it, "At The Mall," describing his usual day hanging out in the mall. Seth Kearsley felt that too much of the movie was about the mall and had it cut, though it appears on the soundtrack as a demo and on the DVD as an animatic.
- Executive Meddling: Seth Kearsley originally pushed for a more family-friendly film and fought hard to remove much of the vulgar humor, but the studio insisted on something strictly for adults. He later revealed that, had he not been afraid of going over writer/star Adam Sandler's head, he would have wanted Whitey to be played by a different actor.
- Genre-Killer: Eight Crazy Nights is one of the animated misfires in the early 2000's that sent theatrical 2D animation into a coma until The Princess and the Frog.
- Ink-Suit Actor: Davey who bears a strong resemblance to Adam Sandler. Tom Baltezor is Jon Lovitz minus the hook hand.
- Production Posse: Sandler's old SNL co-stars Rob Schneider, Kevin Nealon, and Jon Lovitz have roles in the movie.
- Real-Life Relative: Davey's parents are played by Sandler's own mother & father and Jennifer by his then-fiancé (now wife) Jackie Titone.
- Talking to Himself: Aside from Davey, Sandler also voices Whitey, Eleanore, and the deer.
- What Could Have Been: Eleanor's trombone was originally a French horn, on the grounds that it looked funny. However, it was too complicated to animate. Director Seth Kearsley spent the rest of the film jadedly mumbling "It could've been a French horn" whenever scenes of her playing trombone came up.
- Working Title: The film's original title Davey And Whitey was nixed when the marketing people at Columbia considered it "politically incorrect."
Trivia / Eight Crazy Nights