I have always loved to play with motion and shutter speed. I especially enjoy the way one can "draw with light" by taking off the flash on a cheap digicam and going crazy with party lights. I like to do this with my high school students, but I admit that I dance with lights when I'm at home, too.
This image is only colorized in Photoshop. Other than the blue cast, it is unaltered - those wonderful lines were a part of the original image.