This past weekend at Sasquatch! Music Festival in George, WA, Nathaniel Rateliff & The Night Sweats were joined by some special guests during their festival set.

Actor John C. Reilly first introduced the band for their performance, then came onstage during their hit “S.O.B.” to do a little dance with Rateliff while the band played behind them. Pearl Jam guitarist Mike McCready also joined the band for a run of The Band’s “The Shape I’m In” which followed.

Watch a video of the performance below. Rateliff plays today at Ohio’s Nelsonville Music Festival and is slated to appear at Mountain Jam this weekend.