What we're watching tonight:
- CBS (1080i) has NCAA Basketball Championship Sweet Sixteen action starting at 7 p.m.
- ABC (720p) lines up the series premiere of In the Motherhood at 8 p.m., Samantha Who? at 8:30 p.m., Grey's Anatomy at 9 p.m. and Private Practice at 10:01 p.m.
- NBC (1080i) has My Name is Earl at 8 p.m. with The Office at 9 p.m. followed by 30 Rock and E.R.
- Fox (720p) has American Idol at 8 p.m.
- CW(1080i) has Smallville at 8 p.m. and Supernatural at 9 p.m.
- Spike (1080i) has TNA: Impact! at 9 p.m.
- History (720p) has Gangland at 9 p.m. and Warriors at 10 p.m.
- Discovery (1080i) has the season finale of Treasure Quest at 10 p.m.
- A&E (720p) has The Beast at 10 p.m.
- TLC (1080i) has the season finale of Street Customs at 9 p.m. and Heli-Loggers at 10 p.m.
- Speed (720p) has Bullrun at 10 p.m.
- TNT (1080i) has Heat/Bulls at 8 p.m. and Suns/Trail Blazers at 10:30 p.m.