NVIDIA invited the MythBusters guys to do a demonstration that would highlight the difference between a regular computer processor (CPU) and a parallel processor (GPU).  For the CPU they rigged up a little robot with a paint ball gun that painted a simple smiley face.  For the GPU they created a paint ball contraption that shot over 1,000 paint balls simultaneously to paint the Mona Lisa.  The video is in three parts on YouTube, and part one shows the single paint ball gun, part two is the lead up to the Mona Lisa trick, and part three has the grand finale which you can see below.  One of the reasons I love MythBusters is they’ve made being smart cool again.