Mobile Clock is a tiny little program that displays a clock transparently on the desktop. (No, not as fancy as the Vista clock, but it also consumes a lot less resources.)

The clock functions either as a regular clock, or as a countdown to something important, like, say, vacation. When two hours is left is starts blinking red. (Whoohoo!)

It’s extremely small, very nifty, and could become your very best friend, if you take care of it.