Iron Man has always been my favorite super hero. I didn't read many comics as a kid, but when I did, it was Spiderman or Iron Man. And of course the movies are outstanding (the first is still my favorite, but I always prefer the genesis stories). This rendition of the mark VII armor by mmccooey makes my geek heart soar.
(update, turns out this came out some time ago, but I missed it. It's been reposted with some Photoshop loving'. It still kicks ass)