Premiere Alert: "The Biggest Loser"

Starting next week, the premieres will be coming fast and furious, but this week it's kind of slow...

Tonight marks the premiere of "The Biggest Loser" on NBC. It's also the debut of Alison Sweeney ("Days of Our Lives") as the regular host, replacing Caroline Rhea.

So what happened there? You could speculate that NBC was looking to appeal to a wider demographic, but I would also guess it was about money. Since Sweeney is already on the NBC payroll, she's bound to be cheaper...

"The Biggest Loser" premieres tonight (Tuesday) with a two-hour episode beginning at 8 on NBC...