I like the FooBar picture from EbOY and have used it in presentations as a hook on which to hang a discussion of network trends.
EbOY is three artists based in Berlin. What do they do?
We create re-usable pixel objects and take them to build complex and extensible artwork. And we make toys. [eBoy Blog » About]
In the recent RLG Partners meeting, Dale Dougherty spoke interestingly about the evolution of Make Magazine and of the Maker Faire. Here is a picture that EbOY did for that event (see the related entry on the Make blog):