Have you ever heard of Project London? That`s the name of a promising project, which consist of a Independent Feature Film using Blender, for 3d animation and some effect shots. For an independent movie, the animation showed so far, is very impressive!
Don't believe me? Well, take a look into this animation:[ev type="youtube" data="ppLGoMkqc4Q"][/ev]
Awesome, isn't it? For post production and composition, they are using After Effects.
If you want to know more about the project, you can check out this post at the blenderartists forums, or the production blog. It`s very good a production like this using Blender for animation, specially high quality stuff!