On TV tonight
The Biggest Loser, 8 p.m., NBC Hard to believe this show has made it to 100 episodes. There must be a lot of people sitting on the couch watching TV instead of exercising.
90210, 8 p.m., CW Times are tough in the Hills on Valentine's Day. What, the handmade chocolate truffles made by the live-in chef not ready in time? Aww.
The Mentalist, 9 p.m., CBS Cho goes undercover as a guy who knows how to charm the ladies, thanks to Patrick's help. This is a surprise? We'd have thought Patrick would be doing that for his friends anyway.
SERIES PREMIERE T.I.'s Road to Redemption: 45 Days to Go, 9 p.m., MTV Clifford Harris Jr. may be facing up to 30 years on weapons charges, but that won't stop him from making a TV show about serving 1,000 hours of community service and trying to save some troubled teens. Maybe he really does want to make up for it.
— Joshua Gillin firstname.lastname@example.org