v1.0 of plugin: Alpha clock is a small, minimalist LCD-style clock designed to sit unobtrusively on the desktop. I tend to use this with the original Nu2 shell since it has no taskbar with clock. If you wish to customize the look (currently it's set to default green-LCD-on-black and somewhere in the upper left of the screen), you can simply run the application, change it to whatever colors/position you want, then export the registry string and convert to the INF format. Alpha Clock is available from the System menu.
Irnis site (Full plugin, no extra downloads needed)