If you're into LED Throwies, you might like this:

This lightwriting project is the work of LICHTFAKTOR; on their MySpace page, they cite explanatory text from another blog, "colourlovers":

A number of graffiti artists have been tagging everything thought to be impossible without being caught. Well — it’s actually not illegal for them. They’re not using paint. As it turns out, time-lapse photography isn’t just for blooming flowers, skyscapes, or brake lights anymore. Termed Light Graffiti, tag artists are taking their colour to an all new level.

Using an exposure of about ten-to-thirty seconds and a tripod for best results, Light Graffiti artists start at the first click. Glowsticks, flashlights, reflectors, and even torches have been used as mediums to create all sorts of designs and tags, as the artist becomes a ghost of a blur, if visible at all.

Any person, place, or thing can become a central piece of the art. Because all it really takes is less than a minute, light tagging phone booth can be just as easy as something in the privacy of home, though staying home is certainly less fun. Some ‘hardcore’ taggers are set on Light Graffiti not actually being graffiti because it doesn’t have a physical presence, but after seeing photos of it, it’s not too different from tagging a building and having it covered or removed the next day.

See if you can make some yourself. The general rule of Light Graffiti seems to be experimentation and play, so, if your first ‘tag’ isn’t brilliance, keep at it.

Here is "Star Wars vs. Star Trek":