My entry for day 315 of the 2009photochallenge; the theme for the day was VETERAN.
As you can see, this shifter is a grizzled veteran of many miles. It has been through a couple of crashes, has been rebuilt many times, and is now seriously behind the most current version. But it just keeps doing its thing, mile after mile (alas, unlike the lazy and weak rider using it, who also happens to be the photographer). It's a survivor.
Lighting: unmodified halogen key from camera right, rim light from behind/left. (Took a lot of experimentation to get the rim separation on the left side looking decent!) A surprising amount of light made it back to the seat post, visible at the bottom of the image.