This video needs no introduction. Just know that the world is now a better (if slightly less cheery) place. Also know that this game originally featured zombies as the enemy. Whoever created this mod (modification of original game, for the uninformed) wins. Everything.
“My young son asked me what happens after we die. I told him we get buried under a bunch of dirt and worms eat our bodies. I guess I should have told him the truth - that most of us go to Hell and burn eternally - but I didn't want to upset him.”