Almost all of them except for the one's that have an absolute garenteed death waiting for its characters and of course some of the animes I've seen can be real without much work.
One of the main one's I wished was real would be pokemon. Come on you all know that it would be cool to be a trainer in the world of pokemon with its endless possibilities. That, and SAO. I'm sorry, but being able to play in a virtual reality would be epic... and by the time that comes out in the real world I'll most likely be an old lady. Fate/Stay Night would also be cool due to the fact that I could be a mage! How cool would that be? As long as I wasn't chosen to participate in the Holy Grail War.... screw that. I would die.
The Pichu Bros! So Cute! :D
