I guess I shouldn't be that surprised to have found Carl's portfolio here, since I'm familiar with his work, but still it's a pleasant surprise.
I'm from the
FORGE team as well, and although I wasn't the project leader at the time Carl lent us a hand, I've been directly in contact with him all the same, and commissioned him some tasks. Well, I definitely have to recommend him like my ex-colleague Duke already did.
He's been the official artist and animator of the project for about a year and I consider him to be the top when it comes to animations, and a really good pixel-artist as well. But it's not just that: he's a professional worker yet a really funny person to work with, making the team-life really enjoyable. His experience makes it easy for him to understand requests and grasp concepts related to game-making, thus making his material immediately usable in-game, without any need for technical touch-ups (and this saves a lot of time, believe me).
Oh, and he's got some mouths to feed, so don't be stingy!

Seriously, I really hope there will be a chance to work together once again in the next future.
Best luck,
-Gabriele