Critic's corner

True Beauty 10 p.m., Channel 5

Vanessa Minnillo (above) finds relevance as host of a new reality show in which 10 drop-dead gorgeous contestants, both male and female, shack up in an LA mansion and face challenges to determine who is the most beautiful. Huh? Don't you just need to look at them to figure out who wins? Ay, there's the rub. Inner beauty counts as much as the skin-deep variety.

DietTribe 10 p.m., Lifetime

Just when we'd finally cultivated a taste for pure humiliation, hostile confrontation, and all-purpose exploitation, reality television is going all deep and thoughtful on us. On "DietTribe," which premieres tonight, five friends not only try to lose weight with the help of a personal trainer, each participant confronts the issues that led to her weight gain with the support of a psychologist.

Scam of the Century: Bernie Madoff and the $50 Billion Heist

9 p.m., CNBC

Inquiring minds want to know.

Dear Genevieve 8:30 p.m., HGTV

Designer Genevieve Gorder helps people tackle life's toughest challenges, from outdated kitchens to disorganized home offices.

Antiques Roadshow 8 p.m., Channel 2

Season 13 begins where you wish you were: Palm Springs.

The Bachelor 8 p.m., Channel 5

In this season's gripping new wrinkle, the bachelorettes get to vote a lovely off the mansion grounds each week, but the bachelor has veto power.