For about two years I have been subscribed to the youtube channel MinutePhysics. This video is a combination of this channels 3 best videos. Schrodinger's Cat is the idea that the act of observation forces the universe to collapse into one reality, while also creating another reality inside of a greater multiverse. The Theory of Everything is describing the surprisingly simple equation that describes almost everything in the universe (excluding gravity, neutrino oscillation, and dark matter). Finally the sound of hydrogen section is so cool that I don't even want to describe it, just watch the video.