What we're watching tonight:
- NBC (1080i) has the season premiere of Chuck at 8 p.m., and the series premieres of The Event at 9 p.m. and Chase at 10 p.m.
- ABC (720p) has the season premieres of Dancing with the Stars at 8 p.m. and Castle at 10 p.m.
- CBS (1080i) the season premieres of How I Met Your Mother at 8 p.m., Rules of Engagement at 8:30 p.m., Two and a Half Men at 9 p.m., and the series premieres of Mike & Molly at 9:30 p.m. and Hawaii Five-0 at 10 p.m.
- Fox (720p) has the season premiere of House at 8 p.m. and series premiere of Lone Star at 9 p.m.
- CW (1080i) has the 90210 at 8 p.m. and Gossip Girl at 9 p.m.
- Showtime (1080i) has Weeds at 10 p.m. and The Big C at 10:30 p.m.
- USA (1080i) has WWE Raw at 9 p.m.
- MTV (1080i) airs The World of Jenks at 10 p.m.
- History (720p) has American Pickers at 9 p.m. and Pawn $tars at 10 & 10:30 p.m.
- TLC (1080i) has Little People, Big World at 8 & 8:30 p.m., Kate Plus 8 at 9 p.m. and Quints by Surprise at 9:30 & 10 p.m.
- ESPN (720p) has Saints/49ers Monday Night Football at 8:30 p.m.