We barely made it out from our hotel rooms when this news came through the wire. In what might be the biggest publicity scheme this year, actor Michael J. Fox, who played the hero Marty McFly on the three Back To The Future franchise, will make a guest appearance on The Late Show with David Letterman tonight. The timing is quite specific, at 11:30 pm EST, or 8:30 pm PST, where Nike will start the "It's About Time" program in Los Angeles simultaneously. Be sure to tune in to tonight's programming and catch a glimpse at the new Nike MAG 2011 (aka Air McFly).