Science's Limits Are Only Self-Imposed
Tristfardd writes "The Independent has a fine article on ridiculous experiments, some of which really are ridiculous, while others have interesting ramifications. If only the article gave links for viewing the rotating frog or the film on self-trepanation."
The brazil nut experiment reminded me of this fascinating result. If you shake a container of granular material, the granular material spontaneously collects together in one place.
The same page also has a cool video of granular eruption.