Back to the Future Day was packed with developments and capping off the packed schedule, Michael J. Fox appeared on Jimmy Kimmel Live! last night, taking up his role as Marty McFly as he wore the power-lacing Nike Mag during his interview. After only getting to see a few seconds of the self-lacing technology yesterday right when Michael J. Fox received his pair, the world got to see the revolutionary sneaker that locks down with the push of a button up close. You won't be able to get a chance to own a pair of the Nike Mag for yourself until Spring 2016 via an auction format, but there's no doubting Nike delivered the goods. Check out the video below.