Georg Albert Ruthenberg, better known by his stage name Pat Smear, is an American musician and since 2010 has been a guitarist for Foo Fighters. He was the lead guitarist and co-founder of Los Angeles–based punk band The Germs and a rhythm guitarist for Nirvana. After Nirvana disbanded following the death of frontman Kurt Cobain, drummer Dave Grohl went on to form Foo Fighters, with Smear joining on guitar. Smear left the band in 1997 before rejoining as a touring guitarist in 2005 and being promoted back to a full-time member in 2010.