What we're watching: The NFL preseason continues with the Chargers taking on the Bears tonight on CBS, while Tom Cruise doubles up on HBO & Cinemax with War of the Worlds and Risky Business.

Our traditional high definition 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): Kyle XY (9 p.m.)

CBS (1080i):NFL Pre-season Football: Chargers at Bears (8 p.m.), The Late Show with David Letterman (11:35 p.m.)

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

Fox (720p): Spider-Man (8 p.m.)

WB (1080i): What I Like About You (8 .p.m.), Twins (8:30 p.m.), Reba (9 p.m.)

Discovery-HD (1080i): Blue Realm (6 p.m.), Before We Ruled the Earth (7 p.m.), Battleground: The Art of War (8 & 11 p.m.), Rides (9 p.m.), American Chopper (10 p.m.)

TNT-HD (1080i): The Negotiator (8 & 11 p.m.)

ESPN-HD (720p): SportsCenter (6 & 11 p.m.), NFL Live (7:30 p.m.), Little League World Series (8 p.m.), Baseball Tonight (10 p.m.)

INHD (1080i): Caribbean Escapes (6:30 p.m.), MLB Baseball: Nationals at Phillies (7 p.m.), Beer Nutz (10:30 p.m.) Howard TV (11 p.m.), Three Sheets (11:30 p.m.)

INHD2 (1080i): Twilight Zone (7 & 7:30 p.m.), Tropical Rainforest (8 & 11 p.m.), The Donnas in Concert (9 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 & 11:30 p.m.), Bikini Destinations (9 p.m.), World Extreme Cagefighting Exposed (9:30 p.m.), World Extreme Cagefighting: Hot August Fights (10 p.m.)

HDNet Movies (1080i): Jennifer 8 (5:45 p.m.), Blown Away (8 p.m.), Betrayed (10 p.m.)

HBO-HD (1080i): Without Limits (6 p.m.), War of the Worlds (8 p.m.), Deadwood (10 p.m.), Lucky Louie (11 p.m.), Entourage (11:30 p.m.),

MAX-HD (1080i): Risky Business (6 p.m.), Ocean's Twelve (7:45 p.m.), Serenity (10 p.m.)

STZ HD (1080i): Van Helsing (6:45 p.m.), The Fog (11:15 p.m.)

Showtime-HD (1080i): The Next Best Thing (7 p.m.), Weeds (9 & 9:30 p.m.), Brotherhood (11 p.m.)

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