I made a "making of" video to show the long process I went through to make my student film, a 2D animated short with a lot of 3D "tricks".
I used real world pencil and paper for the first part, then scanned in batch with sane/xsane and continued the animation with Pencil 2D.
Inkscape was useful for some parts of the backgrounds, in combination with GIMP (also used for coloring).
Blender was the main tool I used, to composite all the pieces together and to animate the 3D baddie.
The Making of Oranguerrilla: http://www.turiscandurra.com/2013/06...oranguerrilla/