Photos of Mad Men's Jon Hamm Walking

Jon Hamm kept his baseball cap and sunglasses on for a walk in Boston on Friday. He was laying low before the second installment in the new season of Mad Men airs tonight, though some people got a sneak peek at the drama to come when the third episode accidentally leaked on iTunes earlier this week. While we're still happy to have Don Draper back, Jon's going to be trying on a new character in just a few weeks when he starts work on Ben Affleck's The Town.