What we're watching: The NCAA tournament continues on in round 2 on CBS, but later on we'll look out for a new Saturday Night Live episode hosted by Julia Louis-Dreyfus.

Our traditional high-def listings continue below.

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

ABC (720p): Legally Blonde 2: Red, White and Blonde (9 p.m.)

CBS (1080i): NCAA Basketball Championship: Second Round

NBC (1080i): Law & Order (9 p.m.), Law & Order: CI (10 p.m.), Saturday Night Live: Julia Louis Dreyfus (11:29 p.m.)

Fox (720p): N/A

CW (1080i): N/A

TNT-HD (1080i): Deep Impact (8 p.m.), Mission: Impossible 2 (10:30 p.m.)

Discovery-HD (1080i): Sunrise Earth (7 p.m.), Treasures of the Trust (8 & 11 p.m.), HD Traveler (9 & 10 p.m.)

ESPN-HD (720p): SportsCenter (10:30 p.m.)

ESPN2-HD (720p): College GameNight Update (10 p.m.)

INHD (1080i): The Method (7 p.m.), Three Sheets (8, 8:30, 9, 9:30, 10, 10:30 & 11:30 p.m.), Howard Stern (11 p.m.)

HDNet (1080i): NHL on HDNet: Stars at Predators (8 p.m.), Nothing But Trailers (10:30 p.m.), Smallville (11 p.m.)

HDNet Movies (1080i): Owning Mahowny (6:15 p.m.), Switchback (8 p.m.), Internal Affairs (10 p.m.)

Universal HD (1080i): 1941 (6 p.m.), Surface (8 p.m.), Battlestar Galactica (9 p.m.), Mary Shelley's Frankenstein (10 p.m.)

HBO-HD (1080i): Addiction (6:30 p.m.), Take the Lead (8 p.m.), Rome (10 p.m.), Star Wars Episode VI: Return of the Jedi (11 p.m.)

Showtime-HD (1080i): Saw II (8:15 p.m.), The Devil's Rejects (10 p.m.)

MAX-HD (1080i): She's the Man (6 p.m.), Twister (8 p.m.), The Family Stone (10 p.m.)

STZ HD (1080i): Ultraviolet (7:20 p.m.), Silent Hill (9 p.m.), Sin City (11:10 p.m.)

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