In the wake of The Biggest Loser's controversial finale last week, some critics are calling for the NBC show to alter its format, or be canceled altogether.

Rachel Frederickson revealed she'd lost a whopping 155 lbs. - including 45 in the past three months alone - to win this season, and spark controversy.

Posted in: The Biggest Loser

Fans weren't the only ones shocked by The Biggest Loser winner Rachel Frederickson's weight loss. Jillian Michaels herself was at a loss for words.

The personal trainer appeared flabbergasted by Frederickson's 155-pound weight loss (from 260 to 105) on the show's season 15 finale on Tuesday. When the 24-year-old former high school swimmer walked out onstage for the first time since leaving the ranch last fall ... this was Jill's reaction:

Posted in: Jillian Michaels

On The Biggest Loser, losing is winning, and winning big.

With a $250,000 prize on the line, three very contestants took to the scale one last time Tuesday on the finale of the popular, inspirational program.

Posted in: The Biggest Loser