Nirvana was a fucken great band, but I dont think they would have been as great if it wasnt for Dave Grohl, that man is a monster on the drums. Sure, every member is talented in their own way, Kurt with his simplistic, yet genius riffs and Krist with his mediocore but catchy bass lines (cept for a few [Lounge Act] purely amazing bass riff) but yeah, I think if it wasnt for Dave pounding away at the drums and his fucken great drum work, they wouldnt have been as great.