HDTV Listings for May 12, 2009

What we're watching tonight:

• CW (1080i) has Reaper at 8 p.m. and 90210 at 9 p.m.

• Fox (720p) has American Idol at 8 p.m. and the season finale of Fringe at 9:04 p.m.

• History (720p) has the season finale of How the Earth Was Made at 9 p.m. and Life After People at 10 p.m.

• Discovery (1080i) airs Deadliest Catch at 9 p.m. and The Alaska Experiment at 10 p.m.

• HBO (1080i) has The Alzheimers Project at 7 & 8 p.m.

• TLC (1080i) has 18 Kids & Counting at 9 p.m.

• CBS (1080i) brings NCIS at 8 p.m. followed by The Mentalist at 9 p.m. and Without a Trace at 10 p.m.

• ABC (720p) drops in According to Jim at 8 & 8:30 p.m., followed by Dancing with the Stars and Cupid at 10:02 p.m.

• Sci Fi (1080i) slides in ECW at 10 p.m.

• TBS (1080i) brings My Boys at 10:30 p.m.

• FX (720p) has Rescue Me at 10 p.m.

• TNT (1080i) doubles up on NBA Playoffs action with Magic/Celtics at 8 p.m. and Rockets/Lakers at 10:30 p.m.

• Versus (1080i) has NHL playoffs action with Boston/Carolina at 7 p.m. and Detroit/Anaheim at 10 p.m.