It always happens.
I liked the inclusion of 'Chariots of Fire' for his slow motion run and 'Another One Rides the Bus' at the end. I'd like to see some audio credits, as these are two classic pieces which everyone needs to hear.
I would have liked to see him grimace while running, otherwise it doesn't look totally realistic - but hey, you're the one who's got to animate it, I'm only a critic - That's probably my only major problem with the graphics of the toon, as it's smooth and controlled throughout.