On a weird impulse I recently picked up a Rubik's Cube, deciding it might be fun to finally learn how to do one, especially since it seems to emphasize some sort of thinking my brain doesn't really do. It was pretty easy to learn the first half of what's apparently the simplest solution, but to master the end of it would require memorizing a few slightly complex formulas, so that will be a challenge. I'm not sure I'll actually be willing to memorize enough of what you need to to work this, but I do feel it would almost be worth it for the possibility that I would come across one someday and casually solve it to that amazement of the admiring crowd. I guess it is proof of geekdom that this is what I think would be impressive, as opposed to, say, dunking a basketball.

Impressive Links:	Thanks Ant and Acleacius.
Play:	Quest for Pancake.
Stories:	Harrison Ford's leg, in the Star Wars film, with the Millennium Falcon door.
Science:	Little Threat of Zika Spread From Rio Olympics: Study. How a weird Mars rock may be solid proof of an ancient oxygen atmosphere.
Media:	Conan Busts Chris Hardwick For Playing Pokémon Go On Stage. Home Alone Co-Star resurfaces after 26 years. [Parody] Chewbacca Mom! - Minecraft - Star Wars. Lightning Strike Hits Pole in Chicago. July 24th 2016.