You can watch, listen and or join the chat already in progress (there is also live polling and regular updates on the polls which gives you more comprehensive info than watching any one TV network):
http://bravenewfilms.org/network/5-super-tuesday (A LOT of people are tuning in. If you can't access that link try www.theyoungturks.com but keep in mind there is no live chat there):
SCHEDULE (All Times Are EST)
4:00 Liveblog starts
6:00 Video starts, Senator Sherrod Brown
6:20 Senator Ted Kennedy
7:10 Anna Burger, SEIU
7:30 Joe Garofoli, San Francisco Chronicle
7:40 Dolores Huerta
7:50 Cecile Richards, Planned Parenthood
8:10 Melody Barnes, CAP Action Fund
8:50 Jane Hamsher, Firedoglake
9:00 Howard Dean, DNC
9:30 Senator Barbara Boxer
9:40 Eli Pariser, MoveOn.org
10:00 Alexandra Acker, Young Democrats
10:10 Joe Conason, Salon.com
10:20 Trailer Premiere, This Brave Nation
10:30 Katrina vanden Heuvel, The Nation
11:30 Todd Beeton, MyDD
11:40 Keith Boykin/Malia Lazu, Daily Voice
12:00 Joan McCarter, Daily KOS
12:30 Arianna Huffington, The Huffington Post