My obsession with "real night shots," already recounted here, has pushed me to attempt shots that make no sense. Woken up by a coughing fit on our recent camping trip, I spent twenty minutes taking pictures of the sea. It was very dark, with only the faintest glimmer of moonlight towards the horizon. But that's why the resulting images are special to me. They represent the extreme in my quest for blackness. I encourage you to turn off all the lights and stare at this picture for a while, until you start to make out details. It's a good Zen exercise. A great one, actually, since there comes a point when you can't tell whether you're seeing gradations or merely imagining them.
I like the idea of having to work for one's light.