"He has never stopped rapping," says DJ of his partner
"I feel really bad that we inspired such bullshit," Tim Commerford says
"Sometimes the dark side spawns incredible things," Tim Commerford says of new song, "Knucklehead"
61-year-old already files appeal on threatening to kill and drug charges
New clip filmed after band's Grammy performance features drummer Chris Slade behind the kit
Questlove, Will Arnett and Devo's Mark Mothersbaugh turn room full of adults into kids with "Everything Is Awesome"