The nerd interwebs right now are full of homemade attempts to draft Jon Hamm for the role of Superman in the eventual film reboot. (As far as I know, it's still at the scripting stage.)

Hamm himself (Hammself?) has said he's "maybe aged out of" the role. He's certainly shown that he can play Lex Luthor, though. I'm unsure of Hamm as a choice for Superman (he's maybe too ruggedly handsome), but I do enjoy the other idea that has been circling the intertubes: Tina Fey would make an incredible Lois Lane. She's smart, funny, and she doesn't tolerate bullshit. That's Lois Lane, all right.