Check out this geeky clock, the Chromochrome Clock Light.
The Chromochrome clock light features a bunch of different coloured lights, each colour represents a number and the time is worked out by the colours displayed.
Whilst it looks like a funky clock, I am sure it would be quite complicated to work out the time, especially in the middle of the night.
This geeky clock is available for $75 from Chromochrome.
Home Tone via Gear Fuse