Biggest Loser: Couples (8:00 p.m. EST, NBC)

Tonight’s episode is super-sized! (No pun intended.) The contestants get the chance to dig in at a buffet featuring tons of not-very-good-for-you foods. The catch? The contestant who ingests the most calories gets the honor of having the sole vote during elimination. Meanwhile, Gabrielle Reece works out with the players on the beach, and a building-block challenge puts the contestants’ climbing skills to the test. Dr. Huizenga makes an appearance to reveal the players’ updated health scores. And one player gets some terrible news right before the weigh-in.

Your Kid Ate What? (8:00 p.m. EST, TLC)

The title of this show pretty much says it all.

On tonight’s episode, an infant who somehow swallowed a battery is operated on. We also get to check out an 8-year-old who choked on a whistle and a 1-year-old who has a sticker lodged in her throat. It seems like kids really will eat anything.

V (10:00 p.m. EST, ABC)

On tonight’s episode, Anna (Morena Baccarin) and Chad (Scott Wolf) journey to Geneva, Switzerland, with Anna bringing along a technological gift to present at the UN Energy Summit. Erica (Elizabeth Mitchell) finds out that the V Task Force is investigating the Fifth Column, and baby worries as well as trust issues push Valerie (Lourdes Benedicto) to go on the run.