What we're watching tonight:
- Fox (720p) has Fringe at 9 p.m.
- CW (1080i) has Smallville at 8 p.m. and Supernatural at 9 p.m.
- NBC (1080i) has Who Do You Think You Are? at 8 p.m.
- CBS (1080i) has The Defenders at 8 p.m. and CSI: NY at 9 p.m. and Blue Bloods at 10 p.m.
- Discovery (1080i) has Flying Wild Alaska at 9 p.m. and Gold Rush: Alaska at 10 p.m.
- Syfy (1080i) has WWE Smackdown at 8 p.m. and Merlin at 10 p.m.
- Starz (1080i) has the season finale of Spartacus: Gods of the Arena at 10 p.m. and presents Camelot at 11 p.m.
- TLC (1080i) has Say Yes to the Dress at 9 & 9:30 p.m. and DC Cupcakes at 10 p.m.
- IFC (1080i) has Onion News Network at 10 p.m. and the season finale of Portlandia at 10:30 p.m.
- ESPN (1080i) has an NBA doubleheader with Thunder/Magic at 8 p.m. and Nuggets/Trail Blazers at 10:30 p.m.
- ESPN2 (720p) has Siena/Fairfield college basketball at7 p.m. and Friday Night Fights at 9 p.m.