First off: Yes I care how my stuff looks. If you think that's lame, go read another thread, you don't have to troll mine.

UPDATE: I revised the light. There are new pictures in post #13.

To the point:
I ride at night fairly often, and it's a lot safer, as well as a lot less likely to get me a ticket, if I do it with a taillight. However, most taillights that I've seen are pretty ugly looking. I wanted something that was slim and out of the way so that it wasn't really noticeable when it's not on. I thoguht I could mount a light under my saddle instead of on the seatpost, and it would look a lot better. So, I tore apart a planet bike taillight, and started modifying it. What I came up with is kinda ghetto, as it's finished in electrical tape and held on with zip ties, but I think the concept works.

Here's the light from the side of the bike. You barely notice it under the saddle:


And here it is from the back. It's alot more obvious with the flash on the camera turned on. With the flash turned off, it doesn't stand out nearly as much.


Up close:


And turned on:


I think it's be pretty cool if I came up with a nice way to package and mount it.