There are dozens of them in the App Store. Block Breaker Deluxe 2 (from gameloft) is my favorite. 3D Brick Breaker Revolution is also pretty good, that's the one Duvi posted the link too.
I'm using the free version of Brick Breaker Revolution (from Digital Chocolate) and I'm getting pretty addicted to it. It's 3D too, with cool sound effects and neat game play tools.