What we're watching: In lieu of HD MLK birthday tributes, you know what we'll be watching. Jack Bauer is back with the second half of the four-hour 24 season premiere on Fox.

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): The Tonight Show with Jay Leno (11:34 p.m.)

Fox (720p): 24 (8 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.), Arctic Mission (9 p.m.), Franklin's Lost Expedition (10 p.m.)

TNT-HD (1080i): Law & Order (6 p.m.), NBA Tip-Off (7 p.m.), NBA Basketball: Suns at Grizzlies (7:30 p.m.), NBA Basketball: Heat at Lakers (10 p.m.)

ESPN-HD (720p): SportsCenter (6 p.m.), College Basketball: Marquette vs. Louisville (7 p.m.), College Basketball: Missouri vs. Kansas (9 p.m.)

ESPN2-HD (720p): N/A

INHD (1080i): London Live (7 & 7:30 p.m.), Timeless (8, 8:30, 11 & 11:30 p.m.), Ring of Fire (9 p.m.), Geared Up (10 & 10:30 p.m.),

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

HDNet Movies (1080i): Steel Magnolias (6 p.m.), Glory (8 p.m.), Philadelphia (10:05 p.m.)

Universal HD (1080i): The Dream Team (6 p.m.), Twins (8 & 11 p.m.), Sons & Daughters (10 & 10:30 p.m.)

HBO-HD (1080i): In Her Shoes (6:45 p.m.), Rome (9 p.m.), Firewall (10 p.m.)

Showtime-HD (1080i): Coach Carter (6:35 p.m.), The L Word (9 p.m.), Beauty Shop (10 p.m.)

MAX-HD (1080i): Doctor Dolittle (6:30 p.m.), 16 Blocks (8 p.m.), The Man (10 p.m.)

STZ HD (1080i): She's All That (7:20 p.m.), Annapolis (9 p.m.), A Lot Like Love (10:45 p.m)

Sharp updates Mebius lineup, adds Vista