I must say it's pretty clever of maglite to get their brand name mentioned in conjunction with the new trend "light graffiti" regardless of what type of light source people use for this new fad. You could even mod a disposable camera to flash the fancy light graffitti you want if you are so inclined.
Seen quite a few places, such as trendhunter mag mention maglite with light graffitti so I suspect that maglite either got lucky or somebody smart decided to tag along on the new trend. You can see quite a few fun examples at DeviantArt a car, a firefly fake, and this slideshow from lichtfactor at Flickr is pretty awesome.
Via Matt Kelly.
This video is also awesome in it's own right.