Success!
Seasons
Episodes
- Episode 1 : Episode #1.1
- Episode 2 : Episode #1.2
- Episode 3 : Episode #1.3
- Episode 4 : Episode #1.4
- Episode 5 : Episode #1.5
- Episode 6 : Episode #1.6
- Episode 7 : Episode #1.7
- Episode 8 : Episode #1.8
- Episode 9 : Episode #1.9
- Episode 10 : Episode #1.10
- Episode 11 : Episode #1.11
- Episode 12 : Episode #1.12
- Episode 1 : Season Two Begins
- Episode 2 : Straight and Narrow is Tough
- Episode 3 : Hurt Bodies and Feelings
- Episode 4 : What Happens in Vegas Buffets in Vegas
- Episode 5 : Losing Teammates Instead of Weight Drags Down One Team
- Episode 6 : High Anxiety
- Episode 7 : Let's Do the Twist!
- Episode 8 : Fancy Footwork from Pedicures to Pedicabs
- Episode 9 : Jump Start
- Episode 10 : Last One in the Pool is a Winner
- Episode 11 : Scary Scale
- Episode 12 : Season Two Finale
- Episode 1 : Season Premiere
- Episode 2 : The Biggest Loser Goes to the Beach
- Episode 3 : Cruise Week
- Episode 4 : Free Pass
- Episode 5 : Gym Gone
- Episode 6 : Tough Choices
- Episode 7 : Duos
- Episode 8 : They're Back
- Episode 9 : Individuals
- Episode 10 : All About the Holidays
- Episode 11 : Back to School
- Episode 12 : The Final Four
- Episode 13 : Season Finale Live!
- Episode 1 : Back to Basics
- Episode 2 : The Secret Black Team is Revealed!
- Episode 3 : The Pressure of Temptation
- Episode 4 : Bidding Wars
- Episode 5 : Surprise Getaway
- Episode 6 : Lively Beach Competition
- Episode 7 : Weigh-In Shocker
- Episode 8 : Most Emotional Elimination So Far of the Season
- Episode 9 : Biggest Losers Go Green
- Episode 10 : A Taste of Home
- Episode 11 : Memorable Makeovers
- Episode 12 : Viewers Choose the Challenge
- Episode 13 : A Slice of Temptation
- Episode 14 : Five Remaining Players Compete for Spot on Finale
- Episode 15 : "Biggest Loser" Revealed in Season Finale!
- Episode 1 : They Got Fat Together, Can They Get Thin Together?
- Episode 2 : Contestants Face Barbecue Temptation and Giant Seesaw Challenge!
- Episode 3 : Tensions Run High As This Week's Challenge Causes Rifts Among Players
- Episode 4 : One Outcast Duo Squares Off Against All the Rest
- Episode 5 : Surprise Escalator Challenge Changes the Game Forever
- Episode 6 : Celebrity Chef Rocco DiSpirito Guest Stars
- Episode 7 : Special Guest Appearance by Jillian's Mom
- Episode 8 : Contestants Reunited With Loved Ones
- Episode 9 : One Team Surprised With Trip to Vegas
- Episode 10 : Contestants Tackle One of the Biggest Challenges in Show's History
- Episode 11 : All Contestants Return to Ranch in Surprise Twist
- Episode 12 : Contestants Made Over by Fashion Guru Tim Gunn
- Episode 13 : Competition Heats Up With Only Six Contestants Left
- Episode 14 : Last Five Contestants Get Surprise Trip to Australia
- Episode 15 : Episode #5.15
- Episode 16 : "Biggest Loser" Revealed in Season Finale
- Episode 1 : Husband-Wife and Parent-Child Teams
- Episode 2 : Chef Rocco DiSpirito
- Episode 3 : Grand Canyon
- Episode 4 : Toughest Challenge Yet
- Episode 5 : Surprising Weigh-In
- Episode 6 : Longest Challenge Ever
- Episode 7 : Unusual Workouts
- Episode 8 : Record-Breaking Weigh-In
- Episode 9 : Week of Surprises
- Episode 10 : '80s Week
- Episode 11 : Thanksgiving week
- Episode 12 : Episode #6.12
- Episode 13 : Final Four
- Episode 14 : Finale!
- Episode 1 : Season Premiere
- Episode 2 : Bob goes angry
- Episode 3 : Temptations suck
- Episode 4 : Super Bowl
- Episode 5 : Home Team Weigh-In
- Episode 6 : Episode #7.6
- Episode 7 : Gym Keys
- Episode 8 : Black and Blue Part 1
- Episode 9 : Black and Blue Part 2
- Episode 10 : Chef Rocco DiSpirito
- Episode 11 : 24 Hour Fitness Relay Race
- Episode 12 : Contestants Go Home for a Week and Complete Half-Marathons
- Episode 13 : The Teams Split Up
- Episode 14 : Blast from the Past
- Episode 15 : Only One Vote
- Episode 16 : Episode #7.16
- Episode 17 : Trivia Quiz
- Episode 18 : Contestants Get to Train Their Trainers!
- Episode 19 : Running a Full Marathon!
- Episode 20 : Finale
- Episode 21 : Finale Part 2
- Episode 1 : Week One
- Episode 2 : The Biggest Loser Season 9 - Week Two
- Episode 3 : Week 3
- Episode 4 : Episode #9.4
- Episode 5 : Episode #9.5
- Episode 6 : Episode #9.6
- Episode 7 : Episode #9.7
- Episode 8 : Episode #9.8
- Episode 9 : Episode #9.9
- Episode 10 : Week 10
- Episode 11 : Episode #9.11
- Episode 12 : Week 12
- Episode 13 : Episode #9.13
- Episode 14 : Episode #9.14
- Episode 15 : Episode #9.15
- Episode 16 : Episode #9.16
- Episode 17 : Episode #9.17
- Episode 18 : Episode #9.18
- Episode 19 : Season 9 Finale
- Episode 1 : Week 1
- Episode 2 : Week 2
- Episode 3 : Week 3
- Episode 4 : Week 4
- Episode 5 : Week 5
- Episode 6 : Week 6
- Episode 7 : Week 7
- Episode 8 : Week 8
- Episode 9 : Week 9
- Episode 10 : Week 10
- Episode 11 : Week 11
- Episode 12 : Week 12
- Episode 13 : Week 13
- Episode 14 : Week 14
- Episode 15 : Week 15
- Episode 16 : Week 16
- Episode 17 : Week 17
- Episode 18 : Week 18 “Makeover Week”
- Episode 19 : Week 19
- Episode 20 : Week 20
- Episode 21 : Week 21
- Episode 1 : Week 1
- Episode 2 : Week 2
- Episode 3 : Week 3
- Episode 4 : Week 4
- Episode 5 : Week 5
- Episode 6 : Week 6
- Episode 7 : Week 7
- Episode 8 : Week 8
- Episode 9 : Week 9
- Episode 10 : Week 10
- Episode 11 : Week 11
- Episode 12 : Week 12
- Episode 13 : Week 13
- Episode 14 : Week 14
- Episode 15 : Week 15
- Episode 16 : Week 16
- Episode 17 : Week 17
- Episode 18 : Week 18 - Finale
- Episode 1 : We're Back ... And So Is Jillian
- Episode 2 : Keep Moving
- Episode 3 : Cut the Junk
- Episode 4 : Pay It Forward
- Episode 5 : Waist & Money
- Episode 6 : Lead by Example
- Episode 7 : Tough Love
- Episode 8 : Work Together
- Episode 9 : Face Your Fears
- Episode 10 : Make a Difference (Makeover Week)
- Episode 11 : Down to the Wire
- Episode 12 : Live Finale
- Episode 1 : Episode #15.1
- Episode 2 : A Game of Chance
- Episode 3 : The Auction
- Episode 4 : Trick or Treat
- Episode 5 : The Cook-Off
- Episode 6 : Episode #15.6
- Episode 7 : Thanksgiving
- Episode 8 : Take a Trainer Home
- Episode 9 : Workplace Obesity
- Episode 10 : Episode #15.10
- Episode 11 : Who Gets a Second Chance Back?
- Episode 12 : Winter Olympics
- Episode 13 : Makeover Week
- Episode 14 : Triathlon
- Episode 15 : Finale
- Episode 1 : Opening Day
- Episode 2 : The Knockout
- Episode 3 : Double Header
- Episode 4 : The Lottery
- Episode 5 : Sidelined
- Episode 6 : The Tailgate
- Episode 7 : The Drop
- Episode 8 : Penalty Box
- Episode 9 : Yes, Coach!
- Episode 10 : Free Agents
- Episode 11 : No "I" in Team
- Episode 12 : The Playoffs
- Episode 13 : Kauai Part 1
- Episode 14 : Kauai Part 2
- Episode 15 : Makeover Week
- Episode 16 : The Comeback
- Episode 17 : End Zone
- Episode 18 : Live Finale

The Biggest Loser
The Biggest Loser features obese people competing to win a cash prize by losing the highest percentage of weight relative to their initial weight.