Rethinking the clock

I've come across two very cool clock sculptures in the blogosphere recently:

The Indoor Sundial (complete with second hand!) seems to have been thought up as a joke, but dozens of commenters have expressed interest in buying one. I would too.

Dutch artist Christiaan Potsma has designed a complex analog wall clock with mechanical clockwork (animation) that constantly rearranges a set of "hands" to spell out the name of the current hour.