One of my wizard duel videos I made back when I was 15 on my old account, expelliarmus007, was noticed by an entrepeneur who was developing an iPhone application, and he asked me to make something he could use to promote it. So I found some friends keen on helping out, did a quick storyboard, and a few days of wand carving later, we were ready to film!
Shot on a Canon 7D at the University of Western Australia, edited in Adobe After Effects CS5. Editing was a ridiculously long and arduous process here - the simple 6 seconds of lightning from 0:27 took over 60 hours to create and composite.
If there's enough demand for a video tutorial of certain effects in this video, I'll make one!