Quite a lot of names have been thrown out to theoretically play Bruce Wayne/Batman, and it sounds like one of the most popular "fan casts" would theoretically be on board.
In a recent interview on Graham Bensinger's In Depth (via The Hollywood Reporter), Jon Hamm addressed the possibility of him portraying Batman in a live-action setting. As the Mad Men and Baby Driver star explained, he would be more than willing to take on the role, considering what the film's story is.
"It depends on the script, what the story is," Hamm revealed. "I am a huge comic book fan, always have been. I have read comic books since I was nine or younger. And I am pretty knowledgeable about a lot of them. And I like the genre, and I like when they are done well."
Hamm went on to explain,
"I have never had a conversation with anyone about it, literally. And I've sat in the room with all these guys. I have never been offered anything. I think the Internet wants what it wants. But, I mean, a lot of people have to sign off on that, obviously not just the Internet."