After losing 164 pounds, 40-year-old Bill Germanakos became the fourth winner of NBC's The Biggest Loser on Tuesday. Bill takes home $250,000 -- and a new lease on life. His twin brother Jim, voted off the show earlier in the season, takes home $100,000 for losing the highest percentage of body weight among all voted-off contestants. WOW -- these double losers really won big. But so did the others, despite the empty pockets they took home.

I love The Biggest Loser. I think it's witnessing the transformation of the contestants that keeps me coming back for more. I mean, these people have a lot of weight to shed when they first arrive at The Biggest Loser campus. With a lot of hard work, sweat, and tears, these folks make amazing strides.

Contestant Amy started her diet and fitness journey at 297 pounds and now weighs 171. David lost 140 pounds. Neil lost 211. Jerry, the oldest competitor at age 62, lost 110 pounds. And the biggest loser of all -- Bill -- well, Bill started the show at 334 pounds and now weighs 170 pounds.

I'm amazed, inspired, proud of all these determined individuals. And I can't wait to tune in on January 1 when the next installment of The Biggest Loser debuts. This series will feature couples, and I predict some pretty big success stories are about to unravel.