Damien Walters is a stuntman that participated in the filming of the upcoming movie Kick-Ass, based on the comics by the same name, that was created by Mark Millar.
The story is about ordinary high school student that wants to become a real life superhero. While the actor who plays the role is indeed an ordinary boy and can't do the stunts, Damien Walters stepped in and did the action scenes in the costume, as seen in the pictures above. What exactly he can do and what to expect from the movie you can see in the video.
Needless to say, the movie, which I believe now in post production stages and targeted to be released later this year, is drawing lots of attention already. There are some big names in it and the budget is pretty high, so expect to hear a lot about it everywhere.