The controversy is going to be that people expect some horrible, horrific thing to happen to [Anakin] that caused him to [become Darth Vader]. It’s much subtler. It’s something that everybody faces–when you’re looking at yourself, you can see your good and your bad, and say, "Is this a selfish choice or is this a compassionate choice? And once I get something, what would I do to keep from losing it? Would I make a pact with the devil to keep it?
George Lucas on Anakin