What's on tonight: Thursday the 10th.

SEASON PREMIERES:
The CW: Vampire Diaries at 8p; Supernatural at 9p
VH1: Behind the Music at 10p

TiVo SEASON PASS:
Bravo: Real Housewives of Atlanta at 10p; Watch What Happens Live at 12a
Lifetime: Project Runway at 10p; Models of the Runway at 11p