Michael J. Fox jammed with legendary guitarist Joan Jett at "A Funny Thing Happened on the Way to Cure Parkinson's." Held on November 12 at the Waldorf Astoria in New York City, the benefit raised over $4.3 million for the Foundation, with performances by headliner Ricky Gervais, hip-hop artist Kid Cudi, actor/comedian Mike Birbiglia and host comedian John Oliver.

Check out Michael J. Fox playing "Johnny B. Goode" at Funny Thing — which instantly went viral, with more than 2.2 million views to date.