James Franco [1] is taking on Saturday Night Live [2] hosting duties this weekend, and while we're anticipating that his The Interview [3] costar Seth Rogen [4] may make an appearance, there's a different cameo in the episode's promos. After Franco and Cecily Strong poke fun at his extreme schedule (classes at Yale, shooting movies, etc.) and Franco wishes for a sandwich, Jack McBrayer is revealed in the stands behind the pair. Strong tells him to go home, confirming what we all knew already: McBrayer hasn't left the building since 30 Rock ended last year. Watch below, and tune in this weekend to see Franco and musical guest Nicki Minaj.