Jon Hamm heads to 30 Rock to host "SNL" for the fourth time on Saturday, April 12. Hamm stars in the new series "Your Friends ...

It's been nearly a decade since the finale of Mad Men, and Jon Hamm has tackled ... side of me," Hamm explained. "So Lorne gave me that opportunity, which led to 30 Rock, which led to Bridesmaids ...

In one of the best 30 Rock episodes, Liz Lemon (creator Tina Fey) starts dating Dr. Drew Baird (Jon Hamm), whose handsomeness has allowed him to live in a bubble of blissful ignorance all his life.