What we're watching: 24 or Heroes? Many are debating that question tonight as each has a new episode airing at 9 p.m., not to mention fellow returnees Studio 60 and Prison Break. Luckily we came prepared with dual tuner DVRs, but for those who must choose only one, we hope you find solace in the knowledge that there is no wrong choice. (If you don't watch 24 then the the terrorists have won.)

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): What About Brian (10 p.m.)

CBS (1080i): How I Met Your Mother (8 p.m.), The Class (8:30 p.m.), Two and a Half Men (9 p.m.), The New Adventures of Old Christine (9:30 p.m.), CSI: Miami (10 p.m.), The Late Show with David Letterman (11:35 p.m.)

NBC (1080i): Heroes (9 p.m.), Studio 60 on the Sunset Strip (10:01 p.m.), The Tonight Show with Jay Leno (11:34 p.m.)

Fox (720p): Prison Break (8 p.m.), 24 (9 p.m.)

CW (1080i): Everybody Hates Chris (8 p.m.), All of Us (8:30 p.m.), Girlfriends (9 p.m.), The Game (9:30 p.m.)

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

Discovery-HD (1080i): Dinosaur Planet (7 p.m.), Risk Takers (8 & 11 p.m.), HD in the Making: Arctic Mission (9 p.m.), Wild Squadron (10 p.m.)

TNT-HD (1080i): Charmed (6, 7 & 8 p.m.), Law & Order (9, 10 & 11 p.m.)

ESPN-HD (720p): SportsCenter (6 p.m.), College Basketball: Connecticut vs. Louisville (7 p.m.), College Basketball: Oklahoma vs. Oklahoma State (9 p.m.)

ESPN2-HD (720p): N/A

INHD (1080i): London Live (7 & 7:30 p.m.), Timeless (8 p.m.), NBA TV: Grizzlies at Nuggets (8:30 p.m.)

HDNet (1080i): Smallville (8 & 11 p.m.), Star Trek: Enterprise (9 p.m.), Joan of Arcadia (10 p.m.),

HDNet Movies (1080i): The Karate Kid II (6 & 11:30 p.m.), Stand By Me (8 p.m.), Running On Empty (9:30 p.m.)

Universal HD (1080i): Equalizer (6 p.m.), Law & Order: SVU (7 p.m.), Calendar Girl (8 & 11 p.m.), Sons & Daughters (10 & 10:30 p.m.)

HBO-HD (1080i): Star Wars: Episode III - Revenge of the Sith (6:45 p.m.), Rome (9 p.m.), Louis C.K.: Shameless (11 p.m.)

Showtime-HD (1080i): Alfie (2004) (7:05 p.m.), The L Word (9 p.m.), Sleeper Cell (10 & 11 p.m.)

MAX-HD (1080i): Bachelor Party ('84) (6 p.m.), Walk the Line (8 p.m.), Fire Down Below (10:15 p.m.)

STZ HD (1080i): The Adventures of Sharkboy and Lavagirl (7:20 p.m.)