Megan Fox put a photo on Facebook from the set of This is Forty showing her costars Chris O'Dowd and Jason Segel. The follow up to Knocked Up also has that film's stars Paul Rudd and Leslie Mann on board.
Jason Segel is best known for a couple very funny starring roles: he appeared in Knocked Up and also stars in the hit sitcom How I Met Your Mother. He's fortunate enough to be included in the Judd Apatow comedy troupe.