ET was on the scene at a Jenny Craig press conference in L.A. on Wednesday, where stars such as Jason Alexander and Sara Rue dished to us about dropping the pounds!

"The last few weeks have been really amazing - easy," Jason told us about his experience since starting the Jenny Craig program. "The results have been great. I've lost somewhere between 10 and 12 pounds in a month."

Former "Eastwick" star Sara, who started the program last November (two days after Thanksgiving), said she had a really good weigh-in last week -- and she revealed that a famous friend is going to help her resist the usual snack-food temptations during Super Bowl Sunday.

"I'm going to watch the Super Bowl with Valerie Bertinelli, so I figure she'll keep me under control," she giggled.

Meanwhile, Valerie congratulated both Sara and Jason in a pre-taped message at the press conference, and said that her 2010 goal is to run the Boston Marathon four days before she turns 50. Queen Latifah also appeared via satellite and said she has shed 20-plus pounds and has kept the weight off for the last two years thanks to Jenny.