What we're watching tonight:
- CBS (1080i) airs the AFC Championship with Ravens/Steelers at 6 p.m. and The Mentalist at 10 p.m.
- ABC (720p) brings Desperate Housewives at 9 p.m. followed by Brothers & Sisters
- HBO (1080i) has the season premiere of Big Love at 9 p.m. and the season (& HD) premiere of Flight of the Conchords at 10 p.m.
- Showtime (1080i) has the season premiere of The L Word at 9 p.m., series premiere of The United States of Tara at 10 p.m. and season premiere of Secret Diary of a Call Girl at 10:30 p.m.
- ABC Family (720p) has Another Cinderella Story at 8 p.m.
- ESPN2 (720p) kicks off Australian Open coverage at 7 p.m.