I find it quite surprising that Jon Hamm is as famous as he is, considering that at the time of this writing he only has 39 credits to his name! As recently as 1998, Hamm was working as a waiter and part-time set designer for softcore porno movies. It wasn’t until 2000 that Hamm played his first major role, as Burt Ridley on the NBC series Providence. He made his feature film debut in the Clint Eastwood movie Space Cowboys, and played substantial roles in films such as Kissing Jessica Stein and We Were Soldiers. In 2007, Jon Hamm landed the role that would turn him into a huge celebrity: that of Don Draper on Mad Men. Hamm’s acting on the show garnered much praise, and he followed up his success with numerous roles in film and television, including credits in movies such as The A-Team, Howl, The Town, Sucker Punch, and Bridesmaids, and appearances on the shows 30 Rock, The Simpsons, Robot Chicken, The Increasingly Poor Decisions of Todd Margaret. He’s hosted Saturday Night Live and was named Salon.com’s Sexiest Man Alive in 2007. He turns 41 today.