Overgrowth
I recently found a video of a game called Overgrowth. The game is still in the making and there are only 4 guys working on it. The game already looks very promising. That is the art as well as the programming. Every now and then, the guys at Wolfire.com post new videos of new stuff that they add to their engine. The newest one is the one below, it shows of the new animation system.
I've had a chat with one of the developers and he was a very cool guy. They often hang out @ their IRC channel to answer questions, help people out or simply chat with fans. They were so nice to let me try out the editor and so I am currently trying to find time and create some models for it. I cant wait to put my own creations in the editor, so come back some time later to see what I've come up with.