Teleportation, but Night Crawler style because the ink thing is cool. Just imagine, anyone you don't like you just grab, teleport 1500 feet straight up, and drop. Just from watching Jumper, which isn't all that great of a movie anyway, it looks awesome.
Telekinesis would be pretty cool too.
The ability to fly I'd love to have, and it's basically just a slower form of teleportation that you could enjoy a little bit more if you're traveling somewhere.
That would be if I had both his powers.
If all else fails I'd just want to be Wolverine. He's pretty much the most badass mutant ever.