Seems like Jon Hamm had a pretty strange Saturday at Bonnaroo. The Mad Men star performed an unannounced comedy set with Zach Galifianakis and then showed up to sing “We Are The World” at this year’s star-studded Superjam, but in addition to those presumably planned moments he also made an appearance during Belle and Sebastian’s set. As Pitchfork reports, the band’s frontman Stuart Murdoch apparently saw Hamm feed gummy bears to Galifianakis during the comedy performance and decided to ask him to do repeat the act during his own set. So that’s just what Hamm did. You can watch it go down at the 14:30 mark of the video here.