Action Comics #1 by Grant Morrison and Rags Morales. Superman is an amazing character that so few people know what to legitimately do with, and after reading Morrison's thoughts on the character in the backmatter of Absolute All Star Superman, his book Supergods, and his Superman 2000 pitch (google it if you aren't familiar) - ...well, I think it's pretty obvious I'm stoked for it. That and I'm just a huge Morrison fan in general, so if you put him on any book I'm bound to love it.