Heavyweights: Kenan Thompson, funny from the get-go in his second feature This week’s grouping offers hope to the horizontally challenged, especially if one has a sense of humor when it comes to body image. Heavyweights The Parent Trap meets Stalag 17 when an overnight camp for overweight kids is purchased by a motivational speaker cum celebrity fitness guru with a vengeful spirit. Once ridiculed for his husky size, the lean, mean adult-sized Tony Perkis (Ben Stiller) is now looking to cash in on his recent acquisition by starring the corpulent campers in an infomercial. Judd Apatow co-wrote the script, his first for a feature film. Camp Hope isn’t an exercise camp so much as it’s a summer retreat where kids are encouraged to eat. When Apatow and co-scribe/director Steven Brill pursue the prison camp formula — these kids do as good a job of hiding food as Otto Frank did his family — the laughs are fairly consistent. The sight of Perkis using a knife to check lead instigator Gerry’s (Aaron Schwartz) mattress for munchies would bring a tear to Sig Ruman’s eye. It’s when the filmmakers pursue the path of Disney that the mood shifts from heavy to lightweight. For those looking to score unintentional laughs, check out lead counselor Tom’s (Pat Finley) triumphant (and treacly) “I’m tired of being the fat guy” speech that stirs a call to action.