Learn Something New Every Day
Today, at the Harvard Museum of Natural History (http://www.hmnh.harvard.edu/), I managed to learn (in LESS than an hour) about some of the most valuable mineral samples in the world, about how shark teeth really work, about how different sharks have different teeth that help them eat specific sorts of foods (serrated for chomping up seals, pointy for nabbing fish, etc.), and that either skates or stingrays have freaky scaly mouths for crushing mollusks after which they EJECT the shells out of slits on the outside edges of their EYES!
Can you imagine being able to eject stuff you don't want in your mouth out the sides of your head? That would RULE.
Also, Isaac Richman is WICKED SMAAAHT.