July 30: What's on HDTV today

Here are the HDTV programs showing on some selected networks today, along with "what we're watching and why." All times are Eastern:

ABC: K-PAX (8 p.m.)

CBS: Without a Trace (9 p.m.)

NBC: West Wing (8 and 9 p.m.), Revelations (10 p.m.)

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

What we're watching and why: After the recent disclosure of Deepthroat's identity from Watergate fame, tonight's a good chance to catch "All the President's Men" in high def. It's showing at 10 p.m. and 2:30 a.m. on HDNet Movies. You also can catch NASCAR racing on TNT-HD at 8 p.m.