JimmyFallon just posted this up as a throwback - so we will too!
Published on 22 May 2014, it is now at 31 million plus views.
The YouTube description says:
Jimmy officiates Will and Chad's battle for the title of greatest drummer on the Tonight Show that ends in a surprise performance of "Don't Fear the Reaper" from the Red Hot Chili Peppers. The best doppelgängers (yes, plural - I mean, who looks like who?) you ever did see! WATCH: