Tina Fey chatted away on her cell phone Friday while filming 30 Rock in NYC. Joining Tina was her new costar Michael Sheen, whose first episode on the series debuted on Thursday night. His character emerges as a possible romantic interest for Tina's serially unlucky-in-love character Liz Lemon, but we'll have to wait and see how far his plot line progresses. Tina's hard at work on her small screen project, but it's been a whirlwind few weeks for the Vogue cover girl. She's jet-setted across the country throughout award season, including for Date Night to hit theaters soon on April 9.
More photos of Tina and Michael on the 30 Rock set so read more.