Via this great piece on Wired*, I just learned how my blender works.
This video is courtesy of ChefSteps, a new educational site exploring the science of cooking that the Wired piece describes as "part Khan Academy, part Wikipedia, with a hint of Reddit sprinkled in." It's free, and the videos are high-production and informative; there's a full lesson plan up there now about mastering sous vide cooking. Basically, if you are at all a food nerd, you should probably check it out.
*Full disclosure: I freelance for wired.com sometimes.