For those unaware of the HamClock take a look at the link that Mike posted but here also is an image of the information that can be typically displayed :-
It can be not only a nice piece of 'eye-candy' for a modern radio shack but also a useful one to quickly glance at current propagation conditions etc.
There are versions of the software that can be run on your computers desktop but if you're anything like me your screen(s) are full to the brim of open windows already!
I'm off to dig through my monitor collection to see if I could squeeze one into the already crammed shack or shop around for a smaller display.
If you have pictures of your HamClock in the shack then feel free to post up here.
73,
Victor