Michael J. Fox Debuts "Marty McFly’s" On Letterman

Michael J. Fox shows off the NIke's "Back to the Future" shoes on The David Letterman show. These sneakers will be auctions on Ebay and you better have some deep pockets because they will run you at least $1,000. The catch is that proceeds go to the Michael J. Fox Foundation for the treatment & cure of Parkinson’s disease so your money will be used to help people.