Jennifer "Angelina's Uncool" Aniston guest starred on last night's 30 Rock , and we're not going to lie: this was not our favorite episode. Aniston played Claire Harper, Liz and Jenna's "crazy" old roommate from Chicago who, according to Liz, uses sex to "suck men in and bleed them dry." Claire sinks her claws into Liz's boss Jack Donaghy, and there's an uncomfortable, vaguely sexual competition between Claire and Liz. Aniston was sort of trying too hard, and her performance had none of the comedic ease of her always amusing Rachel Green on Friends . Anyway, the funniest line was in the cold open, when Liz says of Claire, "She's like a human Macarena…something everyone did at parties in 1996." Clip above.