It's been announced that Bioshock Infinite will have a reversible cover! Ken Levine has uploaded 6 designs on Irrational's site we can all vote on right now and if that's not enough, Ken is going to upload even more covers later we can print out ourselves.
Poll closes on December 19th, so get on it duders! http://irrationalgames.com/insider/poll/
I voted on number 4 myself, because goddamn it if that does not look rad.