Great - never knew they covered that. Their hang to Punk-songs and Rock&Roll made these Grunge-bands always sympathic to me. There´s this strange story of NOFX and their success, that are an inofficial heritage from the Nirvana-time, call it the survivors from the "nobody wants to hear Punk anymore"-era of the late eighties. Noone listened to their music, but they didn´t care and kept going on. As Nirvana entered the stage and people wanted to hear more of this stuff, it was NOFX, that still played their own style and their music had some similarities to the Nirvana style (I know not much, but it was good enough for the people who asked for more). From this time things went better for them.