The WORST episodes of The Biggest Loser

#1 - Week 1

Season 10 - Episode 1 - Aired 9/21/2010

In the 10th season premiere, Bob and Jillian travel across the U.S. to meet potential players for this season.

#2 - Contestants Face Barbecue Temptation and Giant Seesaw Challenge!

Season 5 - Episode 2 - Aired 1/8/2008

The remaining nine teams are shocked to learn that Bob and Jillian will be training them all together as one team. Afterwards, the contestants will be tempted with a delicious barbecue buffet, and the challenges continue to get harder when they are tasked with riding giant seesaws.

#3 - Episode 9: A Look Back Special

Season 1 - Episode 9 - Aired 12/21/2004

""A Lighter Side"" An often-comic look at the first eight episodes; previously unseen footage of contestants' exit interviews; bloopers; the contestants who cheated when they thought the cameras were out of range.

#4 - Only One Vote

Season 7 - Episode 15 - Aired 4/7/2009

One player gets the only vote at elimination and two players from last season return to dish out advice.

#5 - Finale Part 2

Season 7 - Episode 21 - Aired 5/12/2009

#6 - Black and Blue Part 2

Season 7 - Episode 9 - Aired 2/25/2009

In part two of this week's two-part episode, the contestants continue to adjust to their newly formed blue and black teams. They also meet Prevention Magazine editor Liz Vaccariello and take a pop quiz about health and aging. Then it's a grueling last chance workout leading up to weigh-in, after which another player is sent packing.

#7 - Running a Full Marathon!

Season 7 - Episode 19 - Aired 5/5/2009

The final four contestants go home for 30 days, reunite with friends and family and experience firsthand the challenge of continuing to make diet and exercise a priority back at home. Contestants also learn from host Alison Sweeney what their final challenge of the season will be - running a full marathon when they return to the ranch for their final weigh-in. Completing the full 26.2 mile course will be their toughest challenge yet, but cheering them on along the way are some past season "Biggest Losers"- grand prize winners Ali Vincent and Michelle Aguilar, plus "at home" winners Jim Germanakos, Heba Salama and Bernie Salazar. And as an added incentive, each player who finishes the marathon will get $10,000 to donate to the charity of their choice. Later, it's the very last "last chance workouts" with trainers Bob Harper and Jillian Michaels before a final weigh in determines who the two definite finalists will be - and which two contestants fall below the dreaded yellow line, leaving America to vote which one will be the third finalist to compete for the grand prize of $250,000.

#8 - Black and Blue Part 1

Season 7 - Episode 8 - Aired 2/24/2009

This week brings a shake-up no one sees coming when all of the contestants are divided into just two teams, blue and black, leaving many players without their original trainer. Drama ensues, especially with one team who struggles to get used to their new trainer. And contestants are put to the test with one of the longest challenges ever, in which each team tries to put as many miles as they can on their bike in a 24-hour period.

#9 - Trivia Quiz

Season 7 - Episode 17 - Aired 4/21/2009

Bob and Jillian take the players on a field trip to teach them healthy grocery shopping on a budget, and one player hits a weight-loss milestone.

#10 - Contestants Go Home for a Week and Complete Half-Marathons

Season 7 - Episode 12 - Aired 3/17/2009

All of the contestants head home for a week, where they are faced with the challenge of continuing to make healthy food choices and getting their workouts done in their home environments. After they arrive home, each player gets a DVD with host Allison Sweeney revealing their "at home challenge" to run a half marathon 13.1 miles! A cookie temptation adds an interesting twist to the competition, and the players find out the results of their hard work once they return to the ranch. Later, another contestant is sent packing.

#11 - Surprising Weigh-In

Season 6 - Episode 5 - Aired 10/8/2008

Contestants try to convince a trainer that they are committed to their workouts; a contestant talks with a trainer about relationship issues with a family member; one team must send a family member home.

#12 - The Final Four

Season 3 - Episode 12 - Aired 12/6/2006

It's the final week at the ranch, and the remaining contestants prepare to return home. They will try to take what they've learned at the ranch and apply it to their every day lives to continue losing weight on their own.

#13 - Season Finale Live!

Season 3 - Episode 13 - Aired 12/13/2006

After spending several weeks of diet and exercise with their trainers at the ranch, the final four contestants weigh-in for one last time to reveal who is The Biggest Loser and the winner of the $250,000 grand prize. In addition, the other remaining 46 contestants will return as well to reveal their new selves.

#14 - Toughest Challenge Yet

Season 6 - Episode 4 - Aired 10/7/2008

While one team's members go home to their loved ones, another team spends 24 hours with a trainer; contestants face a competition that tests their endurance as never before; a group of contestants faces the wrath of the trainer.

#15 - Contestants Get to Train Their Trainers!

Season 7 - Episode 18 - Aired 4/28/2009

This week, the tables are turned when contestants get to train their trainers and are only too happy to put Bob and Jillian through the paces! Later, the remaining five players have to race up and down hills while carrying bags representing their total weight loss so far in a particularly grueling challenge. Then it's time to visit Dr. Huizenga for a progress report and to find out their new "real ages" now that they've lost so much weight. The players also try on their "goal outfits" and are amazed to see how far they've really come. Then after weighing in and eliminating one more contestant, the final four players head home, where they'll stay for 30 days before returning to weigh in at the ranch one last time.

#16 - Gym Keys

Season 7 - Episode 7 - Aired 2/17/2009

This week, the contestants hike up a hill to find over 100 keys, but only two teams will find the keys that unlock the Biggest Loser gym. The rest of the teams have to learn to creatively work out all week without the use of the gym. Later, a rowing machine challenge pits team against team, and then a surprising turn of events leads to one contestant heading home.

#17 - Grand Canyon

Season 6 - Episode 3 - Aired 9/30/2008

The contestants go on a trip to the Grand Canyon; a temptation challenge provides the winning team with a more-luxurious trip; the contestants must exercise without a gym or trainers; a medical condition threatens to sideline a contestant.

#18 - Super Bowl

Season 7 - Episode 4 - Aired 1/27/2009

It's Super Bowl week on the Biggest Loser ranch, and that means food, football and fun with two special guest stars - celebrity chef Curtis Stone and NFL MVP Kurt Warner. First, Stone tests the contestants' calorie knowledge of traditional Super Bowl snacks, then teaches them how to make healthier versions. Later, one contestant has to leave the ranch for a very important arrival at home, while another surprises her teammates with a new change in attitude. Then it's time for the challenge, when Warner puts the contestants through an NFL-style drill that will give the winner an especially valuable prize this week. Then the partners who were sent home for 30 days while their teammates stayed on the ranch are welcomed back. But the reunion celebration is quickly followed by a tense weigh-in and elimination that will leave one team heading home.

#19 - Week 13

Season 9 - Episode 13 - Aired 4/13/2010

Suze Orman assesses the players' financial health and predicts who will win this season. Also: The contestants balance quarters on a platter to win a cash prize; a challenge to find keys in the pouring rain yields the winners a huge prize; and Bob holds workouts in the mud.

#20 - Blast from the Past

Season 7 - Episode 14 - Aired 3/31/2009

The players get a blast from the past when Season 5 winner Ali Vincent, and Season 6 winner Michelle Aguilar pay the ranch a visit. (TV-PG)

#21 - 24 Hour Fitness Relay Race

Season 7 - Episode 11 - Aired 3/10/2009

This week brings a pop challenge that will add an interesting twist to the weigh-in, and later, the contestants head to 24 Hour Fitness for a relay race competition. The winning team gets 24 hours of luxury, including spa treatments, but some contestants have trouble resisting temptation during their 24-hour getaway. Also, one contestant has a big blow up with their trainer, and all of the contestants get some welcome and surprising news from host Alison Sweeney after elimination.

#22 - Chef Rocco DiSpirito

Season 7 - Episode 10 - Aired 3/3/2009

Celebrity chef Rocco DiSpirito returns to The Biggest Loser to take the contestants to a restaurant, where he teaches them how to make healthier choices when eating out. Then the contestants have a lively cook-off, preparing healthier, low-calorie versions of once favorite meals. The winning team gets a meal specially prepared by Rocco, and a chance to pick a fortune cookie with an especially valuable fortune inside! In this week's challenge, the players all head to a food bank where they'll race to pack food kits for the hungry and load them on trucks, with the winning team earning an amazing prize. Later, all of the contestants are surprised to learn about a new twist at this week's weigh-in.

#23 - Week 14

Season 9 - Episode 14 - Aired 4/20/2010

The contestants choose food from a buffet table offering low- and high-calorie choices; Gabrielle Reece, pro volley ball player, leads a beach-circuit workout; a contestant gets devastating news.

#24 - Longest Challenge Ever

Season 6 - Episode 6 - Aired 10/14/2008

The contestants are literally kept in the dark during a wild baked goods temptation; the contestants compete in the longest challenge in ``Biggest Loser'' history; a contestant tries to decide whether to stay at the ranch or go home.

#25 - Week 17

Season 9 - Episode 17 - Aired 5/11/2010

Quarterback Tony Romo takes the contestants on a hike; past winners Helen Phillips and Erik Chopin discuss the challenges of keeping weight off away from the ranch. Also: Dr. Huizenga offers health updates; the players race over hills of sand while carrying the amount of weight they've lost; Bob and Jillian review videos of the contestants' weight-loss journeys; and the final four are determined at the weigh-in.