This is an animation I made of this page of Gunnerkrigg Court. When I first read the page, it called out to me that an animated version should exist.
I used Blender for everything except a little bit of modelling done in Inkscape. I used pipe and arm models from blendswap. I'm pretty happy with how it turned out.
I learned a lot about compositing (but not enough - didn't discover 'Z combine' until later), especially compositing hard colors and shadows.