Usually, the folks over at Minute Physics put out some pretty thought-provoking information in their series of quick scientific videos. In this case, the science applied is relatively worthless, but that doesn’t make it any less cool.
Mythbusters tackled the question of whether or not you stay most dry (or rather, least wet) by walking or running in the rain. The thought is that by walking, you are not crashing into as many drops of rain as you would be when running, but you’ll be exposed to it for a longer period of time. In their test, they initially concluded that walking was better, but then corrected the experiment and came to the same conclusion that’s detailed here: