/random thought
You pick up a new game you know nothing about, and start it up. You find that it has a very in depth character creation system where you can easily spend hours making a character look just how you want. You decide on a look you like, and start the game up. Within the first 10 minutes your character is killed by the enemy, and the screen goes black.
You find yourself looking at this man, and discover that you end up taking control of him, and play as him for the rest of the game. You learn about his story, just like you would in any normal game.
About mid way through you meet the main boss of the game, and you discover that it's your character that you created at the start of the game. They are the same class you picked, the same features except a lil more darker/evil like, and you end up fighting your own creation at the end of the game.
This sounds cool, actually.