I just saw In Elysium, he played the main character as a boy!  He only had a few minutes of screen time, but WOW! he was great as Dennis The Menace! and he was great in this too!
For me, he is one of those boys that just reaches out and grabs my attention! almost like he had physically shook me! I definitely want to see more of his work! Oh yeah, Matt Damon did a good job too.