Jennifer Aniston is one of many major guest stars on 30 Rock this season.
On the November 13 episode, the former Friends star appears as Liz's former roommate, a slightly unstable individual that stalks Jack.
Then again, any fan of this sitcom would understand why someone would develop a crush on the character played by Alec Baldwin. Dude is hilarious.
Jennifer Aniston has Jack Donaghy in her stalking sights on 30 Rock.