There have been many cool animations done with light graffiti, but this one by Freddie Wong is the first I've seen that takes an action movie approach. Check it out.
Related:Painting with LightLED Light Drawing Pens
Behind the scenes:
thats awesome! looks like they've got a bunch of tutorial videos on FX
Modern Warfare gone pimped!
I think freddiew is one of the very few youtube partners that actually deserves partnership.