Chameleon Clock is a desktop clock which purpose is to be useful, user-friendly, and beautiful. It is where the power of both features and interface is combined with simplicity.
Check how Chameleon Clock makes a standard Windows tray clock a tiny piece of art by using Winamp skins and bitmap digits. Several skins are included in the distribution as examples.
More info
hxxp://www.softshape.com/cham/