Talk about self control: In his new WB Candid Camera-esque sketch comedy, The Jamie Kennedy Experiment (premiering Sunday at 8 pm/ET), Scream star Jamie Kennedy has to adopt a variety of outlandish personas — including a Malibu-bred hip-hop wannabe and an overzealous infomercial host — without ever cracking up. However, Kennedy confesses to TV Guide Online that he did break down while shooting a skit in which his character can't stop drooling as a result of jaw surgery.

"I started laughing, but you can never tell I'm laughing because I have my mouth open," the 30-year-old stand-up comic-cum-practical joker recalls. "I just thought, 'If this is how it's going to be, I don't know how I'm going to do this!' But ever since that bit, I've never laughed. I've always really been in it."

Although Kennedy has appeared in a number of high-profile films, including Bowfinger and Three Kings, he isn't concerned that the show's unsuspecting "victims" will recognize him under those disguises. "I'm going to look so different every time," he explains. "And I was only busted once so far [by a Scream fan]. We've done 19 [skits] and only one person busted me."