What we're watching: Sure we already saw it on Blu-ray, HD DVD and Xbox Live, but it Superman Returns on Cinemax gets yet another look tonight.

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, premieres in bold:

ABC (720p): Pirates of the Caribbean (8 p.m.)

CBS (1080i): Numb3rs (8 p.m.)

NBC (1080i): Medium (10 p.m.), Saturday Night Live: Alex Baldwin (11:29 p.m.)

Fox (720p): N/A

CW (1080i): N/A

TNT-HD (1080i): Remember the Titans (8 & 10:30 p.m.)

Discovery-HD (1080i): Sunrise Earth (7 p.m.), Destination HD (8 & 11 p.m.), Treasures of the Trust (9 p.m.), Secrets of Denali National Park (10 p.m.)

ESPN-HD (720p): Baseball Tonight (10 p.m.), SportsCenter (11 p.m.)

ESPN2-HD (720p): NASCAR Countdown (6:30 p.m.), NASCAR Busch Series at Kentucky (8:30 p.m.)

Mojo HD (1080i): Beer Nutz (7 & 10:30 p.m.), Uncorked with Billy Merritt (7:30 p.m.), King of Miami (8, 8:30, 9 & 9:30 p.m.), The Show (10 p.m.), Howard Stern (11 p.m.), Three Sheets (11:30 p.m.)

HDNet (1080i): Get Out! (7 p.m.), MLS: Fire at D.C. United (7:30 p.m.), Nothing But Trailers (9:30 p.m.), Dinner Rush (10 p.m.)

HDNet Movies (1080i): Raise the Red Lantern (8 p.m.), Dangerous Liaisons (10:15 p.m.)

Universal HD (1080i): Mary Shelley's Frankenstein (8 p.m.), 2007 US Open Championship (10 p.m.)

HBO-HD (1080i): Ice Age: The Meltdown (8 p.m.), HBO Bad: N'Dou vs. Malignaggi & Stevens vs. Dirrell (9:30 p.m.)

Showtime-HD (1080i): The Tudors (8 p.m.), Waiting (9 p.m.), Queer Duck: The Movie (10:35 p.m.)

MAX-HD (1080i): True Crime (7:45 p.m.), Superman Returns (10 p.m.)

STZ HD (1080i): Silent Hill (6:50 p.m.), Pulse (9 p.m.), Stay Alive (10:30 p.m.)

Blu-ray disc coatings starting to rot?