What's On Tonight: March Madness, Smackdown, Wedding Bells, Paula Deen

• At 8, PBS has a new NOW, followed by a new Washington Week.
• NBC has a new 1 vs. 100 at 8, then the return of Identity.
• CBS has March Madness all night.
• The CW has a new Smackdown! at 8.
• AMC has Cool Hand Luke at 8, with Paul Newman.
• Also at 8: HBO has a marathon of new episodes of Addiction.
• At 9, FOX has a new episode of The Wedding Bells.
• TLC has a new What Not To Wear at 9.
• At 9:30, Food Network has a new Giada's Weekend Getaways (in Napa/Sonoma), then a new ep of Paula's Party.
• At 10, ABC has new 20/20.
• A&E has a new Intervention at 10.
• At 11, HBO has a new Real Time With Bill Maher, with guests Jason Alexander, Chris Rock, Dan Rather, Martha Raddatz, and former Arkansas governor Mike Huckabee.

Check your local TV listings for more.