Wild man Seth Rogen tames his Animal House instincts to play a husband-father next door to a frat house, run by Zac Efron, playing a role that would have seemed tailor-made for Rogen. But the switch-off has an R-rated zest. "I knew I'd get to touch Seth's bare chest," says Efron. Okay, then. Rose Byrne (Bridesmaids) co-stars.