Trivia: Kevin Smith wrote the part of Jay specifically for Jason Mewes, basing the character almost entirely on him. Despite the nearly exact replica of himself, Jason was terrified at having to "act" it out in front of the camera. Kevin gave a months worth of lessons to Jason in how to act like Jason Mewes. They even had to get him drunk before almost every take just so he wouldn't tense up. He was so camera shy that during the scene where Jay and Silent Bob dance there are no crew members around. The crew turned the camera on, then everyone went into the RST Video so he could dance by himself.
Trivia: When Randall is on the phone, listing all of the porn movies he wants to order, Jeff Anderson wasn't in the same room as the actress playing the Happy Scrappy mother. Anderson refused to read the list of porno movies in front of her (and particularly in front of the child). The reaction shots of the mother were obtained by reading the list to her.
Trivia: Jeff Anderson had absolutely no acting experience prior to this film, and really never wanted to be in it. He was friends with Kevin Smith, and actually auditioned for the part of Jay, almost as a joke. Of course he didn't get it, but a few weeks later Kevin called him and asked him to read for Randall (whom Smith had written for himself, hence Randall having all the best jokes). Smith thought he was dead on for the part of Randall and gave it to him, and then decided to take the part of Silent Bob for himself.
Trivia: Another of the many cross-overs from "Clerks" and "Mallrats" is Rick Derris (played by Ernest O'Donnell), the trainer that gives Dante a hard time about being out of shape. In "Mallrats," when T.S. was talking to Gwen about her having sex with another guy in front of everyone while they were going out, it was on Rick Derris' gaming table.Donald Jenkins
Trivia: Silent Bob breaks his silence at the end of the movie and offers Dante some advice, but the line he speaks was actually meant to be said by Jay. Jason Mewes kept on messing up that last line, and being such a low budget movie they couldn't afford to waste any more film, so Kevin Smith decided to take the line. Kevin Smith actually hated the idea of having Silent Bob speak, but the fans loved it so much he has since worked it into all of his films featuring Jay and Silent Bob.
Trivia: If you watch the end credits you will see that Walter Flanagan, Scott Mosier, and David Klein play about five people each. Walter Flanagan: Woolen cap smoker,Egg man, Offended Customer, Cat admiring bitter customer. Scott Mosier: William Black, Angry hockey player, Angry mourner. David Klein: Hunting cap smoker, Low I.Q. Video customer, Hubcap searching customer, angry mourner, angry crowd at door.ShooterMcGavin34
Trivia: Walter Flanagan, who played the woolen capped smoker in the angry crowd, the egg infatuated man, offended customer, and the cat admiring bitter customer, also filled the part of Walt Grover (aka Fanboy) that Brody got in to fight with in front of the comic book store in Mallrats.Donald Jenkins
Trivia: In the scene where Dante meets Rick Derris and Heather, the original script called for Derris to recount a time when he and Caitlin had sex in a tent on the beach. Though the anecdote never made the final cut of the film, it explains why Heather suggests she and Derris head to the beach at the end of the scene.
Trivia: For some time after the film, there were rumors that director Kevin Smith and co-star Jeff Anderson (Randal) had a falling-out, as Anderson did not appear in another Smith film until "Dogma." Smith and Anderson later confirmed that while they did have a brief disagreement (Anderson wanted to hold out for more money or a contract from Miramax when the film was sold, causing some brief issues), it was blown out of proportion by the perception of others.