HDTV Listings for March 19, 2010

What we're watching tonight:

• CBS (1080i) continues NCAA Basketball Tournament first round action at 7 p.m.

• MyNetworkTV (720p) has WWE SmackDown at 8 p.m.

• NBC (1080i) has Who Do You Think You Are? at 8 p.m.

• Syfy (1080i) has Caprica at 9 p.m.

• Starz (1080i) has Spartacus: Blood & Sand at 10 p.m

• TLC (1080i) brings What Not to Wear at 9 p.m. and Four Weddings at 10 p.m.

• HBO (1080i) has The Ricky Gervais Show at 9 p.m., The Life and Times of Tim at 9:30 p.m., Real Time with Bill Maher at 10 p.m. and Funny or Die Presents at 11:59 p.m.

• History (720p) has Gangland at 9 p.m.

• Discovery (1080i) has American Loggers at 10 p.m.

• Food (1080i) airs The Best Thing I Ever Ate at 10 p.m.

• NBATV (1080i) has Celtics/Rockets at 8:30 p.m.