The Muppets' Animal (2015)
Grohl, who often whips his hair around like a Muppet when he's drumming, joined unwieldy Animal for a drum-off in 2015 when the Muppets show was airing on TV. In a one-minute clip, Grohl says, "I've been waiting years for this, Animal." "Now we see who best," the muppet replies. Then for the next minute, the Foo Fighters frontman and the Electric Mayhem stickman trade licks in a competitive drum-off. Before long, they're playing together – so hard in fact that each of their kits fall over, leading to a hilarious kicker. Later, Grohl fronted the Muppets on a version of "Learn to Fly."