Having spent the first half of his career toiling away in relative obscurity, it’s understandable that Jon Hamm has made a habit out of making the most his downtime while MAD MEN’s on hiatus. Next up, in his impressive string of guest spots that include recent appearances on 30 ROCK, the Emmys, Rob Corddry’s CHILDREN’S HOSPITAL, Joshua Malina’s BACKWASH and CONAN, is a right of passage for any actor of his acclaim: THE SIMPSONS. And here with your first look at Hamm’s animated alter ego — an FBI agent who tosses Homer in the slammer for a laundry list of criminal offences in the New Year — is theTVaddict.com. “Donnie Fatso” airs Sunday December 12 at 8PM on FOX (Global TV in Canada).

Mad about Jon Hamm? You’re not the only one. On February 5th everybody’s favorite “Mad Man” drops by 30 ROCK to play Dr. Drew Baird, a new neighbor and object of Liz Lemon’s affection.

Unfortunately for Lemon, Hamm promises that, “There are various attempts to strike up chemistry, all of which seem to go comically and horribly wrong.” Fortunately for us 30 ROCK addicts, Hamm had us at “comically and horribly wrong!”