It's not done yet, but if this still image is an indication of what's coming, then I can't wait to see it.

The image comes from Alex Zemke who is working on an animated Portal short called Companionship, which is a "tale of love, loss and cubes." Zemke is a professional animator whose resume includes many Sony properties including Uncharted 2 and 3 and The Smurfs movie, so he knows what he is doing.

Companionship sounds like a passion project that Zemke is working on, so there is no telling when he will consider it complete, but I hope it is soon. You can check out Zemke's DeviantArt page for a few more stills from the project.