HDTV Listings for May 20, 2009

What we're watching tonight:

• Fox (720p) has the season finale of American Idol at 8 p.m.

• CBS (1080i) has the season finales of The New Adventures of Old Christine at 8 p.m., Gary Unmarried at 8:30 p.m. and Criminal Minds at 9 p.m.

• Discovery (1080i) has Time Warp at 8 p.m., Mythbusters at 9 p.m. and Pitchmen at 10 p.m.

• NBC (1080i) has Law & Order at 10 p.m.

• DirecTV (1080i) airs the series finale of Smith at 10 p.m.

• History (720p) has UFO Hunters at 10 p.m.

• Spike TV (1080i) has The Ultimate Fighter at 10 p.m.

• Comedy Central (1080i) has Reno 911 at 10:30 p.m.

• ESPN (720p) has baseball with Cubs/Cardinals at 8 p.m.

• TNT (1080i) has Game 1 of the ECF with Magic/Cavaliers at 8:30 p.m.