This is the biggest movie since Jurassic Park, but it’s kind of like Barney — you have to make fun of his popularity,” says Comedy Central’s Steve Lavapies of the network’s Forrest Gump parody ads. Obviously, Hollywood agrees: A poster for New Line Cinema’s upcoming Dumb and Dumber features stars Jim Carrey and Jeff Daniels striking a Gumpish pose , and Fox TV’s The George Carlin Show offers its own version. Alas, the trend may be waning. Originally, the producers of next year’s Tales From the Crypt feature film toyed with the idea of sitting the Crypt Keeper on a bench, but thought better of it. He’s no idiot.