Who will win the big prize?

Tonight's exciting, two-hour, season finale of "The Biggest Loser" (9 p.m., NBC) pits the four finalists against one another in the final weigh-in, and also brings back each of the previous team-members. We talked to host ALISON SWEENEY, trainer JILLIAN MICHAELS, and finalists BILL GERMANAKOS, JULIE HADDEN, ISABEAU MILLER and HOLLIE SELF, each of whom emerged from the underdog black team, about what to expect!

"I never thought I'd be here in the first place," confesses Julie, who has dropped 58 pounds and now weighs 160. "Now that I've had a taste of the finals, I want it and I'm gonna take it all the way."

After his twin brother, JIM, was eliminated from the competition, Bill became the favorite to win the coveted $250,000 prize. He lost an amazing 130 pounds and says, "I've taken control of my life, and I'll never let [that weight] creep back in to my life again."

Black team trainer Jillian takes a lot of the credit for their success. "I don't think it's a coincidence that I've won every season I've ever done," she says. "I'm extremely tough in the gym, I'm unforgiving, I'm merciless -- but it pays off."