Throwing your digital camera in the air at night, with the shutter set to a long exposure, is producing some nifty artwork.

The Times (London) reports on the new craze: “Ryan Gallagher, a 28-year-old theatrical lighting specialist from Texas kick-started the trend last August. Unable to sleep one night, Gallagher took his low-grade digital camera and experimented by waving it at some city lights while set to a long exposure. So intrigued was he with the results that he decided to display them on Flickr.”

“Part of the addiction comes from the fact that the results are always a surprise,” Gallagher said. “Each picture is like opening a little black box into a world we cannot see.”

Be warned, though, eventually you’ll drop the camera, so don’t use that new Canon 5D. An old VGA model is recommended.