HDTV Listings for May 19, 2011

What we're watching tonight:

• CBS (1080i) has the season finales of The Big Bang Theory at 8 p.m., Rules of Engagement at 8:30 p.m. and The Mentalist at 10 p.m.

• ABC (720p) has the spring finale of Wipeout at 8 p.m. and the season finales of Grey's Anatomy at 9 p.m. and Private Practice at 10 p.m.

• NBC (1080i) has the season finales of The Office at 9 p.m. and Parks & Recreation at 10 & 10:30 p.m.

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

• 3net (1080i) has Bullproof at 9 p.m.

• Spike TV (1080i) has TNA: Impact at 9 p.m.

• History (720p) has Swamp People at 9 p.m. and Mounted in Alaska at 10 p.m.

• TLC (1080i) has Police Women at 9 p.m.

• Discovery (1080i) has Swords: Life on the Line at 10 p.m.

• Showtime (1080i) has The Secret Diary of A Call Girl at 10:30 p.m. and Gigolos at 11 p.m.

• MTV (1080i) has America's Best Dance Crew at 10 p.m. and Son of a Gun at 11 p.m.

• Versus (1080i) has NHL Playoffs action with Bruins/Lightning at 8 p.m.

• ESPN, ESPN 3D (720p) has NBA Playoffs action with Thunder/Mavericks at 9 p.m.