I've discovered that, whenever I'm bored, I have a list of specific episodes from a ranging from a variety of TV series that I automatically go to. So, here is a very long list of my favorite episodes.
During this episode, Arthur finds a magic horn that lets him talk to his dead father, Uther, but accidentally releases his father's ghost onto Camelot. Or at least that's what Gauis says the problem is. But I don't think that was Uther's ghost.
If it wasn't for the prophecy, there is a good chance Harry wouldn't have been a part of Voldemort's demise at all, though he no doubt would have fought against him. What makes him so special, so much more vital than the other students who fought Voldemort was the prophecy.