My life has been significantly changed by watching this series: The Fuel Project-Know Your Enemy
I have often heard as a Christian that Lucifer is the ultimate adversary, and a force behind all evil, but I never really realized how true that is. It's like one of those things you understand and believe, but you don't really know why you believe it other than a reliable person told you it's true. When you watch this series, you will realize just how true this is. Once you realize how true it is, it changes your outlook on life a little bit. I highly recommend that everyone watch this, especially if you are a Christian. The time to fulfill the great comission is not tomorrow, it is today.