NASCAR DRIVER CLINT BOWYER GUEST STARS ON NBC'S HIT SERIES "THE BIGGEST LOSER: COUPLES" IN EPISODE THAT ALSO CHALLENGES EACH CONTESTANT TO PULL A TWO-TON CAR ON TUESDAY, MARCH 24 (9-11 P.M. ET)

Plus, One Contestant Breaks A "Biggest Loser" Record At Weigh-In!

UNIVERSAL CITY, CA - March 20, 2009 - NASCAR driver Clint Bowyer will visit "Biggest Loser" contestants when they face one of their toughest challenges yet - each pulling a two-ton car - in an episode of NBC's hit series "The Biggest Loser: Couples" airing Tuesday, March 24 from 9-11 p.m. ET. The episode will start an hour later than usual due to a Presidential address on Tuesday at 8 p.m. ET.

This week's episode kicks off with host Alison Sweeney telling the contestants that they are no longer on teams - they will now compete as singles, so she gives each of them back their original team color "Biggest Loser" shirts. And with the switch to singles comes the news that each contestant will get to decide which trainer they want to train them for the remainder of their time at the ranch.

Once each contestant chooses between trainers Bob Harper and Jillian Michaels, they begin part one of this week's two-part challenge. They are each given their weight lost to date, and get to distribute it to other players for part two of the challenge - leading to an emotional breakdown for one player who feels the rest of the contestants are ganging up on her.

Then it's on to part two of the challenge as the group heads to a raceway and meets NASCAR driver Clint Bowyer, winner of the 2008 NASCAR Nationwide Series drivers championship. He gives an inspirational pep talk to the contestants before they face one of their hardest challenges yet. They'll each pull a two-ton car - plus the weight added on from part one of the challenge - for half a mile!

Later, one contestant breaks a "Biggest Loser" record at a weigh-in that finds several players hitting big milestones before an elimination round sends another player home.

"The Biggest Loser" is a production of Reveille LLC, 25/7 Productions and 3Ball Productions. Ben Silverman (NBC's "The Office," "Ugly Betty"), Dave Broome ("A Model Life with Petra Nemcova," "Tsunami Aid: A Concert of Hope"), JD Roth ("Age of Love," "Beauty and the Geek"), Todd A. Nelson ("Unan1mous," "Beauty and the Geek") and Mark Koops ("American Gladiators," "Shear Genius") serve as executive producers.