People love themselves. So if you want people to watch your video, just make sure it's entirely about them.
BuzzFeed, the king of this sort of thinking, put together a video of things you do or don't do, and uses strange facts to determine whether or not you are as awesome as you think you are. Aside form being a diabocally genius video strategy, it's also pretty interesting. Random knowledge that will come in handy when you're bored in a bar, no doubt.