Lo, the Daves are Legion, and on cloudless nights they appear on Quincy Hill and pass judgment upon those who have sinned against our land. Yea, fear the council of Dave, all ye who throwest thine old washers and dryers down in the Quincy ravine! Beware, spray-painters of ugly graffiti (especially ye who cannot spell very well)!
So yes, I had fun with my new LED flashlight. It took me several nights to get this just right, but boy was it fun! This photo is taken from the scenic turnoff on US-41 near the top of Quincy Hill -- that's Houghton you can see in the background. I probably frightened more than a few drivers, when I was kneeling behind these posts, shining a bright bluish light on my face, in the middle of the night. If you're interested in the secrets of this photo, ping me in the comments -- I'll keep quiet for now so as not to spoil the surprise.
Edit: Having been up for a few years, I suppose that it's only fair to share the secrets. I wrote a detailed account of the taking of this photo on Digital Photography School: The Council of Dave: fun with light painting. Enjoy!