8 p.m., FOXDavid Boreanaz) and Brennan (Emily Deschanel) pretend to be a married couple at Brennan's high school reunion to investigate the death of one of her former classmates. A little bird told me there's going to be a slow dance involved...
9 p.m., FOXPeter Weller, a.k.a. RoboCop, guest-stars as Alistair Peck, a powerful man whom the Fringe Division suspects is connected to the mysterious deaths of several commuters.
9 p.m., NBC
9 p.m., CWJared Padalecki) and Dean (Jensen Ackles) team up with Castiel (Misha Collins) to battle Zachariah (Kurt Fuller) and prevent a war on Earth. Don't forget to eat a hearty breakfast, boys!
10 p.m., BRAVO
Also on the airwaves...
FlashForward, 8 p.m., ABC
Survivor, 8 p.m., CBS
The Vampire Diaries, 8 p.m., CW
CSI, 9 p.m., CBS
Project Runway, 10 p.m., LIFETIME
Randy Jackson Presents: America's Best Dance Crew, 10 p.m., MTV
The Sarah Silverman Program, Season 3 finale, 12 a.m., COMEDY
Important Things with Demetri Martin, Season 2 finale, 12:30 a.m., COMEDY
What are you watching tonight?