If you want to see one of the coolest things that has ever been done, you should google "Chris Hadfield Space Oddity" and watch the awesomeness that the you tube video brings you.  Chris Hadfield was the commander of the International Space Station for the past 5 months, and he did all sorts of great web demonstrations of different experiments on the space station, capping it all off with what you should be watching right now instead of reading this.