On TV tonight
The Biggest Loser, 9 p.m., NBC A two-hour episode with NASCAR's Clint Bowyer, which, ironically, means more fans of the show sitting in front of the TV longer shoveling Doritos into their faces.
90210, 9 p.m., CW Matt Lanter from Heroes drops by for an appearance, just so he can get a firsthand account of how bad a TV series can be.
Without a Trace, 10 p.m., CBS A psychologist whose brother is a serial rapist goes missing, and the team thinks the imprisoned sibling may be involved. In the disappearance, we mean.
— Joshua Gillin email@example.com