Michael J. Fox Shows Off 'Back to the Future' Marty McFly Shoes (Video)
He also talks to David Letterman about Charlie Sheen, who replaced him on Spin City.
Michael J. Fox showed off the Nike Air Mags -- the shoes his character Marty McFly wears in Back to the Future 2 -- on the Late Show With David Letterman Thursday night.
Nike is releasing 1,500 pairs of the shoes on eBay, with proceeds to benefit the Michael J. Fox Foundation for Parkinson's Research. A pair was auctioned off in L.A. Thursday night for $37,500.
"This brings together three populations of major Joneses," Fox told Letterman, "the sneakerheads, the Back to the Future people, who, believe me, are out of their minds… in a good way! Thank God for them. And the people in the Parkinson's community who have an interest in research."
Fox then also confirmed that the co-founder of Google, Sergey Brin, was going to match up to $50 million of the proceeds raised through 2012 for research.
Fox also discussed Charlie Sheen, who replaced him on Spin City.
"He worked and I got paid," he joked. "He was great and I feel bad for all his troubles now."
When Letterman quipped that Sheen was "all out there winning," Fox agreed: "That's a straightforward argument to me. He's winning, and that's fine, and I have no judgment about that… I wish Charlie all the best, and I wish Ashton all the best.
He then joked: "Show business. We're all here because we're not all there."