I've always been as certain about the existence of extraterrestrials as I am about my craving for pizza at 2 a.m. on a Saturday night. It would be way too narcissistic of us to think we're the only intelligent life forms cruising around in this vast galaxy. The United States government recently confirmed a bunch of UFO sightings and even decided to drop some surprising footage. While they didn't go so far as to declare, "Hey, E.T. is our new bestie," they didn't dismiss the idea either. We've h…