What we're watching: Plenty of season finales tonight, and two championship teams trying to avoid just that. The NBA championship contenders of last year, Spurs & Pistons, are both trying to stave off elimination and force a deciding Game 7 against the Mavericks and Cavaliers. The seasons that we know are ending tonight belong to Close to Home, Numb3rs and a two-hour block of Conviction series finale.


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, season finales are in bold:

ABC (720p): Nope.

CBS (1080i): Close to Home (9 p.m.), Numb3rs (10 p.m.), The Late Show with David Letterman (11:30 p.m.)

NBC (1080i): Conviction (9 & 10 p.m.), The Tonight Show with Jay Leno (11:35 p.m.)

Fox (720p): X2: X-Men United (8 p.m.)

WB (1080i):  Nope

Discovery-HD (1080i):  Crocodile Hunter (7 p.m.), Rides (8 & 11 p.m.), Monster Garage (9 p.m.), American Chopper (10 p.m.)

ESPN-HD (720p): SportsCenter (6 p.m.) NBA Playoffs: Pistons at Cavaliers (7 p.m.), NBA Playoffs: Spurs at Mavericks (9:30 p.m.)

INHD (1080i): Rugby Union (7 & 7:30 p.m.), Gravity Games (8 p.m.), MLB Baseiball: Giants at Athletics (9 p.m.)

INHD2 (1080i): Twilight Zone (7 & 7:30 p.m.), Great North (8 p.m.), Doyle Bramhall II: Live from the Great Wall of China (9 p.m.), You Are Here (10 p.m.), In Theaters (10:30 p.m.)

HDNet (1080i): HDNet World Report (7 p.m.), Get Out!: Belize (8 & 11 p.m.), Art Mann Presents: (8:30 p.m.), Bikini Destinations (9 p.m.), Boxing: Santana vs. Barrientes (9:30 p.m.)

HDNet Movies (1080i): Little Man Tate (6:45 p.m.), One Last Thing (8:30 & 11 p.m.), Higher Definition (10:05 & 10:30 p.m.)

HBO-HD (1080i): Son of the Mask (6:15 p.m.), Anchorman: The Legend of Ron Burgundy (8 p.m.), The Sopranos (10 p.m.)

MAX-HD (1080i): Dominion: Prequel to the Exorcist (6:15 p.m.), Ricochet (8:15 p.m.), Miss Congeniality 2: Armed and Fabulous (10 p.m.)

STZ HD (1080i): The Pacifier (6:15 p.m.), The Village (10 p.m.)

Showtime-HD (1080i): Ghostbusters (6:30 p.m.), Team America: World Police (9:15 p.m.), Huff (10 p.m.)

TNT-HD (1080i): Charmed (6 p.m.), Law & Order (7 p.m.), A Time to Kill (8 p.m.), Along Came a Spider (11 p.m.)