Trivia: When Shaggy and Scooby walk into the kitchen, in the ride, and Shaggy says "lights, camera, action." He walks by a camera on a tripod pretending that it is supposed to be there. But a few seconds later, we see a shot of Shaggy coming from that exact angle, it is obviously being used to film the movie.
Trivia: Writer James Gunn originally wrote the film to be a darker, edgier comedy geared more towards adults who grew up with the original cartoon than geared towards children. (His intention was for the film to be rated PG-13.) However, it was edited down to a family-friendly PG rating after parents complained during test-screenings, and because the studio felt the film should ultimately be aimed at children. Among the content cut for the PG rating was a kiss between Velma and Daphne, some crude jokes, and footage with (very) visible cleavage, which had to be covered up with CG.