March Madness is dominating the TV schedule, but a number of shows are back with new episodes or premieres. The Hobbit comes to Blu-ray (in 3D, but not 48fps yet) this week, and Continuum has its season finale. Look below for the highlights this week, followed after the break by our weekly listing of what to look out for in TV, Blu-ray and videogames. NCAA Men's Basketball Tournament The seedings are set and hopefully your brackets are all filled in. March Madness is upon us and over the next three weekends we'll see who emerges victorious from the field of 68 teams. This year you'll be able to