Rogen's Diet Tips: 'Ex Lax, Coffee, Mexican Food'

Seth Rogen went from "Superbad" to super skinny -- and he's joking to "Extra" about how he got his slender figure! Plus, the "Monsters vs. Aliens" star dishes about the film and his co-stars -- and being busted for pot!

Seth Rogen

"Monsters vs. Aliens" invades theatres Friday!