In an unexpected crossover, Jason Segel, the charming star of Forgetting Sarah Marshall, I Love You, Man, and TV’s sorely missed Freaks and Geeks, joined The Swell Season on stage in Los Angeles last night to tickle the ivories and some funny bones. Performing a song expressly designed to make Swell Season groupies have sex with him, Segel took Marketa Irglova’s advice and included as much personal information in the song as possible. Segel’s Hail Mary pass included, among other things, giving out his home phone number to the crowd, bragging about his celebrity status, and insisting that no special effects were used in his full-frontal scene from Sarah Marshall. Check out the hilarious clip above.