The brilliant folks over at PhD Comics started a contest called 'Explain your Ph.D thesis in two minutes'. Having attempted this very feat not long ago, I fully appreciate anyone who can do this well. PhD Comics is in the process animating the top eleven vote getters.
This one was my favorite: Mystery Tubes in Stick Bug's Guts.
Though I do take exception to the idea that walking sticks aren't showy.
Here's an example of one of their original comics:
There's tons more stuff by the Ph.D. Comics, both videos and comics to pore over, so take your time and enjoy!