This Week's TV: 8 Marathons that Could Make the Week Fly Past

This week's television includes the season finales of two beloved shows, Sanctuary and Beavis and Butthead. Plus new episodes of Chuck, Generator Rex and a few other shows. But mostly, this week belongs to marathons. Including two straight days of Twilight Zone episodes, a ton of classic television... and an unusual… » 12/26/11 9:00am 12/26/11 9:00am