http://www.bigbuckbunny.org/

Watch the movie (streamed version)

It's basically an animated short created entirely with FOS(free-open source) software (mostly in blender 3D). It's actually pretty damn entertaining.

That was more impressive story and graphics wise than many cgi films that have been released in theaters.

Plus it had an old cartoon nostalgia feel going on.

I thought the story and comedic timing were pretty weak. But the lighting, fur technology, and grass were pretty good.

Wow that's gotta be the ugliest bunny I've ever seen.
There was something about it that repulsed me, for the 1st 10 secs that I was looking at it. Perhaps some sort of furry uncanny valley. Brrrr....