Slow exposure light painting is almost always dramatic and fun in photographs but because of that, these sorts of images are a dime a dozen. However, this gallery stands out as an especially well done example. It utilizes interesting locations, cool skies and ambient lighting as well as introducing a light wave technique that is really cool. Also, these images all have a clean precision to them that light painting rarely achieves. I found the gallery here, but you can see more of the artist's work here.