Entertainment Weekly reports that Damon, 40, will return as Liz Lemon's pilot boyfriend. NBC declined to comment.
30 Rock's live episode will shoot from creator and star Tina Fey's old stomping grounds at Saturday Night Live. "It's super-exciting," Fey recently told TV Guide Network. "We're going to do two live shows, so they'll be a little different. Hopefully, people will tweet the differences."