My Linux-using friend and colleague, Niall, sent along an image via email today that had me literally laughing out loud. I think it's the funniest image I've seen for a while now, since it so perfectly illustrates (and kinda exaggerates) the difference between Mac OS X (based on BSD Unix) and GNU/Linux.
Notice how simple the OS X box is; on or off... well maybe that's a bit of an overstatement. However, on the other hand, notice how you're not really sure which button or knob on the Linux box even turns the thing on or off. In fact, the button you're so sure powers down the box, might just reformat the hard drive! :-)
FYI, the original, larger image can be found at http://gniarf.net1.nerim.net/mindless2.jpg