Everything Explained Through Flowcharts
Doogie Horner may be the world's only stand-up comedian / book designer, and he pretty durn good at both. (He's currently designing the book I wrote earlier this year, and I'm pretty sure it's going to be great.) He's responsible for the now-famous cover of Pride and Prejudice and Zombies, but he was just on America's Got Talent doing stand-up (and got pretty far, I'm told, for a comic). When he's not doing either of those things, he's designing flowcharts. Hilarious flowcharts. In fact, he wrote a whole book of them. It's called Everything Explained Through Flowcharts. One of my favorites is A Graphic Guide to Facebook Portraits, a snippet of which is below. You can see the whole thing here.
There's also Things to Say During Sex (link to entire image here).
Then, for all you budding comedians, there's the UNIVERSAL COMEDY FLOWCHART, to help you figure out just the right routine. (Full thing here.)