Jon Hamm: Guest Starring on The Simpsons!

Jon Hamm is about to get Simpsonized!

The 39-year-old Mad Men actor will lend his voice to a character in an upcoming Simpsons episode, executive producer Al Jean told EW.

Jon will play an FBI supervisor that Homer deals with when he becomes an informant in prison…and finds his way into Fat Tony’s inner circle.

“You gave [Jon] one note and he immediately did 12 great things with it,” Al told EW. “He was really funny. And handsome. He had it all.”