I made this theme for cairo-clock recently and thought I might share it.
The girl is Nyu from the anime Elfen Lied.

Just untar the file to ~/.cairo-clock/themes/ like so:

mkdir -p ~/.cairo-clock/themes/
tar -C ~/.cairo-clock/themes/ -xcf nyu.tgz

There's also a version with her legs dangling included. Just exchange the filenames of clock-face.svg and clock-face-moving.svg! I made a small patch for cairo-clock which will show the -moving image when the clock is being moved with the mouse.