Jennifer Aniston: 30 Rock "Was Awesome"

Jennifer Aniston in West Hollywood, California . Jeffrey Mayer/WireImage.com Buzz up! Jennifer Aniston had a blast shooting her guest spot on 30 Rock. "It was awesome, really, really fun," the actress, 39, told Entertainment Tonight Canada while promoting her new film, Management, at the Toronto Film Festival on Sunday. Aniston will appear on one upcoming episode of the hit NBC sitcom as the former roommate of Tina Fey's character. The role has her playing a "free-spirited, Fatal Attraction-like stalker" of Alec Baldwin's character, the network has said. The former Friends star described the cast as "stellar." Watch Jennifer Aniston shoot a scene of 30 Rock. Aniston also told ET about her involvement in the Stand Up to Cancer telethon that aired Friday night and raised over $100 million for cancer research and causes. "We have opportunities," she said of using her fame. "You have to be very careful. You have to be very specific where you use the power of your celebrity." See photos of Jennifer Aniston's lifetime of love and drama. As for 30 Rock, Aniston has at least one fan on the set. "Jennifer is not only incredibly lovely to have around, she also has what the young people would call 'mad skills.' We're very excited that she's joining us," Fey, who is also the show's creator and executive producer, has said. ET's interview with Aniston will air Monday, Sept. 8.