Seth Rogen hosted Saturday Night Live last night, but he was far from the only star present during his monologue. It was crashed by Taylor Swift ("You were getting really upset. And whenever a man shows emotion, I appear."), James Franco (who appeared after Rogen joked that he was actually the teen girl Franco was recently flirting with on Instagram), and Zooey Deschanel (who brought her ukulele along with her, of course). That, and other highlights, in the gallery.