What we're watching tonight:- NBC (1080i) has Community at 8 p.m., Parks & Recreation at 8:30 p.m. and The Office at 9 & 9:30 p.m.
- ABC (720p) has Flash Forward at 8 p.m., Grey's Anatomy at 9 p.m. and the season premiere of Private Practice at 10:01 p.m.
- CBS (1080i) has Survivor at 8 p.m., CSI at 9 p.m. and The Mentalist at 10 p.m.
- Fox (720p) has Bones at 8 p.m. and Fringe at 9 p.m
- CW (1080i) airs The Vampire Diaries at 8 p.m. and Supernatural at 9 p.m.
- WGN (1080i) has WWE Superstars at 8 p.m.
- History (720p) has the season finale of Marked at 9 p.m.
- Spike (1080i) has TNA! Impact at 9 & 11 p.m.
- FX (720p) has It's Always Sunny in Philadelphia at 10 p.m.
- ESPN (720p) has Nebraska/Missouri college football at 9 p.m.
- TBS (1080i) has Red sox/Angels playoffs baseball at 9 p.m.