Rather than waste my desktop with just a scenic view of some far away land (or exotic beauty), I like to litter it with useful information. GeekTool makes this painless, particularly displaying logs, such as console.log and system.log, and running command line programs.
By using some clever trickery, you can have an automatically updating iTunes artwork display on your desktop. The hint even includes a download containing all the screenshots you need to get up and running.
