As hinted at by Dave Grohl last week, the surviving members of Nirvana, (Grohl, Krist Novoselic, Pat Smear) reunited for a mini-set at Cal Jam Festival last night. Filling in for the late Kurt Cobain was Joan Jett, John McAuley of Deer Tick and Brody Dalle! You can watch fan-filmed videos of their mini-set during The Foo Fighters headline show below.