Threadless just released 22 new Iron Man tees, the winners of the Iron Man t-shirt design contest. And if you are a fan of Iron Man, I think you will be pleased. The t-shirt above by Luc Journot is my favorite but I would be wary of buying a dark t-shirt with so much ink on the bottom. (I like my tees soft.)
Be sure to check them out before they are sold out.