What we're watching: The first round of the NBA Playoffs is almost over, with the first-round matchup of the century between the best player in the league (Kobe) and the 2-time defending MVP (Nash). Starts at 8:30 p.m. on TNT-HD. Also not to be missed is the Kentucky Derby at 5 p.m. or Tom Hanks on a new Saturday Night Live, but when the game is on you know where to be.

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:

ABC (720p): Seabiscuit (8 p.m.)

CBS (1080i): CSI: NY (8 p.m.), CSI (9 p.m.)

NBC (1080i):  Kentucky Derby (5 p.m.), Law & Order: SVU (9 p.m.), Law & Order: Criminal Intent (10 p.m.), Saturday Night Live: Tom Hanks (11:30 p.m.)

Fox (720p): Nope.

Discovery-HD (1080i)Roush Racing: Driver X (6 p.m.), Sunrise Earth (7 p.m.), Traveler (8 & 11 p.m.), Destination HD: Naples (9 p.m.), Arctic Mission (10 p.m.)

TNT-HD (1080i): NBA Playoff Pregame (8 p.m.), NBA Playoffs: Lakers at Suns (8:30 p.m.), Inside the NBA (11 p.m.)

ESPN-HD (720p):
SportsCenter (7 & 11 p.m.), Impossible Jump (8 p.m.), Baseball Tonight (10 p.m.)

INHD (1080i):
Arena Football: Georgia at New York (7 p.m.), Tour de Gorge (10 p.m.), World Series Recap (10:30 p.m.)

INHD2 (1080i):
Discoveries...America: Maine (7 p.m), Go! Luxury Coaches (8 p.m.), In Theatres (8:30 p.m), Search and Destroy (9 p.m), Don't Look Now (11 p.m.)

HDNet (1080i):
Get Out!: Belize (7 p.m.), HDNet This Month (8 p.m.), MLS Soccer: Chicago at Kansas City (8:30 p.m.), World Extreme Cagefighting Exposed (10:30 p.m.), World Extreme Cagefighting: Cinco de Mayhem (11 p.m.)

HDNet Movies (1080i): Open Range (5:30 p.m.), Red Corner (8 p.m.), Bat 21 (10:05 p.m.)

HBO-HD (1080i):
Father of the Bride (6:15 p.m.), Monster-in-Law (8 p.m.), The Sopranos (11 p.m.)

MAX-HD (1080i):
White Noise (6:20 p.m.), The Chronicles of Riddick (8 p.m.), House of Wax (10 p.m.)

STZ HD (1080i):
The Pacifier (7:15 p.m.), Sky High (9:15 p.m.),  Hellboy (10:50 p.m.)

Sho-HD(1080i): Re-evolution of Sports (6:45 p.m.)

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