Hey man, this looks good.
I really like how you set up a lights in your scene.

As for the animation, I think it's good, but in some places it should be more... hmmm... relaxed, if you know what I mean. At some places it seems that Juicebox is stick to the ground (a small jumping-steps in order to retreave stability could fix this). I think also that the jump before the wall should be stronger, and tumble of the Juisebox at the end faster.
That's just a few points.
How did you do that very nice SSS material on the trees?
Mental ray?