Though it was all but certain, Jason Sudeikis confirmed on Wednesday that he's leaving Saturday Night Live after ten seasons. "I'm definitely done," Sudeikis told David Letterman. "I’m not coming back." He joins Bill Hader and Fred Armisen in the "Veterans Who Departed After Season 38" group. Sudeikis has We're the Millers premiering Aug. 9, a pair of other films in pre-production, and will most likely appear in Horrible Bosses 2.