Doing stupid things for SCIENCE! (and learning valuable techniques)

This was the recommended video off of a video posted in the Airplane Design thread... I found it amazing that the Airforce / NASA spent money and time doing this... and then translated what they learned into a useable technique for their astronauts. https://www.youtube.com/watch?v=edIK_3GWq2w (sorry - don't know how to post this as a playable video) Anyway - I thought it would be fun to collect 'stupid science that works' stuff. (If this would be better off tucked into another thread, feel free!)