Phenomenal response, thx a lot.
First time I hear about the parallax effect, but it is exactly what I was looking for. It appears to be some kind of image warping (with small amplitudes) of a foreground image that is composed onto a background image to create the illusion of movement.
So who exactly would I be looking for? Are 2D artists in general adept at this, or is there a particular type of artist that specializes in animating 2D art?