What we're watching: The NCAA Tournament continues on, and if you haven't ripped up your bracket already in disgust there should be plenty of exciting hoops action. If you missed the premiere of Raines last night, NBC brings it back again for the first time, and its definitely worth checking out.

Our traditional high definition listings continue below.

Here are some other HDTV programs showing on selected networks today. All times are Eastern reruns are in italics, premieres in bold:

ABC (720p): Grey's Anatomy (8 p.m.)

CBS (1080i): NCAA Basketball Championship First Round

NBC (1080i): Raines (10 p.m.), The Tonight Show with Jay Leno (11:34 p.m.)

Fox (720p): House (8 p.m.)

CW (1080i): N/A

MYNTV (1080i): Wicked Wicked Games (8 p.m.), Watch Over Me (9 p.m.)

Discovery-HD (1080i): Nubia: The Forgotten Kingdom (7 p.m.), The Desert Speaks (8 & 11 p.m.), White Hot Winter (8:30 p.m.), Secrets of Hawaii's National Parks (9 p.m.), Fantastic Festivals of the World (10 p.m.)

TNT-HD (1080i): Law & Order (6 & 7 p.m.), Ocean's Eleven (8 p.m.), The Perfect Storm (10:30 p.m.)

ESPN-HD (720p): SportsCenter (11 p.m.)

ESPN2-HD (720p): Friday Night Fights: Pereira vs. Aiken (8 p.m.)

INHD (1080i): London Live (7 & 7:30 p.m.), Flight of the Aquanaut (8 p.m.), NBA TV: Pistons at Suns (9 p.m.)

Universal HD (1080i): Law & Order: SVU (7 p.m.), Firefly (8 p.m.), Surface (9 p.m.), Conviction (10 p.m.), The Best Man (11 p.m.)

HDNet (1080i): Arrested Development (7 & 7:30 p.m.),NHL on HDNet: Candiens at Penguins (7:30 & 11:30 p.m.), Nothing But Trailers (10 p.m.), Star Trek Enterprise (10:30 p.m.)

HDNet Movies (1080i): Wayne's World 2 (8:05 p.m.), The Man with Two Brains (9:45 p.m.), Satan's Little Helper (11:15 p.m.)

HBO-HD (1080i): Walk the Line (7:30 p.m.), Rome (10 p.m.)

MAX-HD (1080i): Dirty Harry (6:30 p.m.), The Wash (8:15 p.m.), Harry Potter and the Goblet of Fire (10 p.m.)

STZ HD (1080i): The Wedding Singer (7:20 p.m.), Stay Alive (9 p.m.), Armageddon (10:30 p.m.)

Showtime (1080i): An Inconvenient Truth (6:45 p.m.), An Update with Former Vice President Al Gore (8:20 p.m.), The L Word (9 p.m.), Debbie Does Dallas Again (11 & 11:30 p.m.)

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