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.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.