The slowmo at the end is worth watching
http://www.youtube.com/watch?v=fKK933KK6Gg (http://www.youtube.com/watch?v=fKK933KK6Gg)
(ok to post youtube links in here?)
You are correct, that slow mo bit was amazing, the image bounces off the wall in the paint spray until you see the painting appear through it when the mist dissapates
very cool