Most bizarre thing ever: Cells at Work. Your body as a city with every cell as a person. Paramilitary white blood cells and hapless red blood cells delivering oxygen, protecting their world (you) from horrible tentacled monsters (germs).
I've been watching some dull horror movies (The Strangers, among others) which I haven't blogged, and this is better paced and has better characters than all of them combined.
The world is a little too generic with street & industrial scenes, lazy animation, but overall a neat trick.