Big news this week out of Telltale Games on the Back to the Future front: The game will be served to the Mac and PC platforms at launch, with PSN and iPad to follow. I said all that first because that's the big announcement. What I want to share next is something that just blows my mind: a sound-alike voice casting for Marty McFly. Obviously, Michael J. Fox has more important things on his plate, and has been keeping busy with some TV acting, and with his condition it's key not to take on too much at once. So, Telltale was forced to look elsewhere, and you have to hear the voice they found.