Michel Gagné's "Sensology"

Sensology was handdrawn (painted) with a Wacon tablet at first, and later, a Cintiq, using Adobe Photoshop. The drawings and frames were then composited and manipulated in a 2D software called Animo. There is no vector animation at any point in the film.

It wasn't done in Flash, but the timin and visual style of the experimental/abstract FX animation are awesome inspiration.