What we're watching tonight:
- CW (1080i) has the season finale of Smallville at 8 p.m.
- CBS (1080i) has Ghost Whisperer at 8 p.m., Medium at 9 p.m. and Miami Medical at 10 p.m.
- NBC (1080i) has Friday Night Lights at 8 p.m.
- MyNetworkTV (720p) has WWE Smackdown at 8 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.
- TLC (1080i) has Say Yes to the Dress at 9 p.m. and the season finale of Four Weddings at 10 p.m.
- Starz (1080i) has Party Down at 10 p.m. and Gravity at 10:30 p.m.
- Syfy (1080i) airs Stargate Universe at 9 p.m. and Merlin at 10 p.m.
- Food (1080i) has The Private Chefs of Beverly Hills at 10 p.m.
- Discovery (1080i) has Construction Intervention at 10 p.m.
- Versus (1080i) has Flyers/Bruins playoffs hockey at 7 p.m.
- NFL Network (1080i) has Blaze/Iron Arena League football at 8 p.m.