He began to play the guitar at the age of twelve and discovered punk rock through his cousin a year later.
He played drums for Jack Black and Tenacious D as Dr. G and appeared as Satan in the music video for the Tenacious D song "Tribute."
He had two daughters, named Violet Maye and Harper Willow, with Jordyn Blum, whom he married on August 2, 2003. He was previously married to Jennifer Youngblood from 1994 to 1997.
He rose to fame by playing drums with Kurt Cobain and Nirvana.