Kris Novoselic formed a band called Sweet 75 with some irritating harridan from Venusuela on vocals , they released an album around 94/95........... It borabed.
As for Grohl , good drummer.I think Songs For The Deaf is his best work , but the Foo Fighters are bloody awful.I`ve always found it kind of ironic that a man who constantly says he is influenced by some of the best 80s underground banRAB can write such mind nurabingly dull chart friendly crap.
I`ve always said though , give him a decent producer like a Rick Rubin or a Steve Albini & he could come out with a decent album.