Just to let everyone know, this airs TONIGHT (11/21/07) on the Discovery Channel at 8 p.m. EST. It's the first of a 5 part series, with the following parts to air weekly on Wednesdays.
More information:
http://dsc.discovery.com/tv/video-game/video-game.html
Edit: According to the schedule, each episode will be re-run the following Saturday at 11 a.m. EST if you happen to miss the initial airing.