Weiner argued the case for Hamm to win the 'Best Actor' gong at this year's Emmys in an interview with Deadline. The writer and exec said that Mad Men is "always better than it's written" when Hamm is involved.
"Jon is an incredible actor, but what he does is not very showy," Weiner said.
"But you know what? He's a great actor, and I think everybody respects him for that and getting nominated is a big deal and he'll be okay with it whatever happens and so will I. Because in the end you can see it on the show.
"It's not lip service, it's about the work, and the guy just loves his work. And he worked… He did everything in the show. He's here every minute that anybody is here."
Speaking about Hamm's presence on set, he added: "He is a real leader, he's incredible. And it's not just knowing everybody's name and everything... [He] has got a great sense of humour, loves to have a good time, and works his ass off.
"And what I love is that I think because of the way the show is maybe people don't know how much he's doing. But it's very hard to do what he does, and a lot of kudos go to the writing and of course I love that. But it is always better than it's written when he gets it in his hands.
"So award or no award, I'm not lying to you, I feel like from the pilot to every time the guy is on the screen he definitely is giving one of the best performances of the year."
Mad Men will return to AMC and Sky Atlantic in 2012.
The Emmy Awards will air September 18 on Fox.
> Jon Hamm: 'It will be difficult to win Emmy for Mad Men'