Dave Grohl was in Probot.
 In 2004, Grohl drummed on six tracks for Nine Inch Nails' 2005 album With Teeth and played percussion on one more, later returning to play drums on 'The Idea of You' from their 2016 EP Not the Actual Events
On December 1, 2015, Grohl appeared on an episode of The Muppets where he competed in a "drum off" with Animal

