Continuity mistake: In the beginning of the movie during the skateboard scene with Shaggy and Scooby riding along the conveyor belt, Scooby grabs a hook and both Shaggy and Scooby jump off of the skateboard. You see the skateboard falling off the conveyor belt, but in the next scene it is on the conveyor belt and being crushed. (00:03:20)
Scooby-Doo (2002)
Ending / spoiler
Directed by: Raja Gosnell
Starring: Matthew Lillard, Rowan Atkinson, Sarah Michelle Gellar, Isla Fisher, Linda Cardellini, Freddie Prinze Jr.
Scrappy-Doo is inside Rowan Atkinson who is a robot. Scrappy mutates into a giant alsatian. The real Rowan Atkinson turns up to congratulate the Scooby gang on stopping scrappy. Then it all goes soppy.
Trinity
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Trivia: Many Harry Potter fans went to see the film just to see the trailer for "Harry Potter and the Chamber of Secrets" - the first time it was ever shown.
Question: When the gang kicked Scrappy out, how did he get to Spooky Island and learn about the Daemon Ritus?
Answer: It's never explained. We're just left to assume he was somehow able to.