Jennifer Aniston While most of the country had the day off for the MLK holiday, Jen was hard at work here in LA!

Just check out the script in Jen's hand. She's alllll business! Especially since her boy-toy hasn't been around lately...come to think of it, we've barely even seen them together in the New Year. Or, let me rephrase that, we've barely even seen them together since Jen's movie topped the box office two weeks in a row!

Trouble in cougar land?