Veteran rockers The Who surprised fans at their New York City gig on Wednesday night when they brought out Michael J. Fox as their special guest.

The band took to the stage in the Big Apple as part of Fox's annual A Funny Thing Happened On The Way To Cure Parkinson's event. And the charity bash was given a special boost as the Back To The Future actor, a Parkinson's sufferer himself, joined The Who's Roger Daltrey and Pete Townshend for a rendition of Magic Bus.

Fox rocked out with Townshend as the pair traded riffs throughout the track as he declared: "This is almost worth getting Parkinson's for!" Fox wasn't the only Hollywood celebrity at the event - newlyweds Ryan Reynolds and Scarlett Johansson, and actress Julianne Moore were also in attendance.

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(This news article provided by World Entertainment News Network)