Jon Hamm's girlfriend Jennifer Westfeldt jumped in for a few photo ops before he headed into the studio to tape Late Night With Conan O'Brien in NYC last night. Tonight is Jon's first appearance on 30 Rock, and Conan teased him about Tina Fey declaring Jon the most handsome man on the planet. Jon played it cool with the charm that we love so much, saying that he does his best not to distract people with his good looks. He also promised to bring hilarity to his episodes, and we're excited to see him — even if he's not playing Don Draper.
To see Jon chatting with Conan, just