Want to impress a beloved man or lady next time you're at a bar? Burn all your Ed Hardy t-shirts, grab two identical glasses, bottles of water and whiskey and a playing card, and watch this video:
How does it work? Nope, not magic: just gravity! Alcohol is less dense than water -- just like oil. So when you let them interact, with shaking or stirring to get them to mix, the alcohol floats to the top. It may not be quite Jesus-level alcohol-water manipulation, but it's still pretty neat, huh?