wow...was this just luck or did you use a sound timer thing for your camera shutter? (They demonstrated the mechanism on the show "Wired" this week...) Very cool effect!
No, actually it just took a lot of practice. Luckily Dan was willing to get hit in the face with a lot of water balloons. A sound timer would be awesome though!
I guess we all have to make some sacrafices for good art, be it waterballoons in the face or otherwise.
(: