Computer-generated special effects bolster this madcap live-action mystery, which is based on the popular cartoon series. Here, the groovy crimefighters of Mystery, Inc.---Fred (Freddie Prinze Jr.), Daphne (Sarah Michelle Gellar), Velma (Linda Cardellini), Shaggy (Matthew Lillard) and that cowardly canine Scooby---investigate a spooky theme park. Rowan Atkinson, Isla Fisher.