Yay! Double post day!!
Here is a comparison shot between a rough animation pencil test and the final coloured composite.
The pencil animation was filmed on a webcam and captured in Monkey Jam (and had some compression issues), traced digitally in vector program Pencil and coloured in Inkscape. The Background was created in The Gimp and everything was composited together in Wax.
If that all sounds like gibberish then maybe you would like to know that those are all Open Source freeware software.
This is a shot of self proclaimed "Flying Ace!" Tim Portans in search of that pesky and elusive Aye-Aye.