Live from New York, It's '30 Rock'! With Matt Damon!

There will be a lot of surprises during Thursday night's live "30 Rock" episode - which looks like it will included a cameo by Matt Damon.

"Extra's" AJ Calloway caught up with the cast, and Tina Fey hinted that Damon might be making another appearance. "I can't possibly say... You'll have to tune in Thursday at 8:30," Tina said, adding, "possibly," (while shaking her head yes). Sounds like a confirmation.

When doing a live show, there's a good chance someone may fumble their lines, but Alec Baldwin assures fans that it won't be Tina. "[Not] Tina, because she writes it," he said. "She does have that advantage over everyone else."

Tune in to "30 Rock" on NBC, Thursday at 8:30 PM PDT, and catch what could be Tina's most embarrassing moment. She predicts it will be "somewhere around 8:37 PM."