So! I have a very interesting question, about which I'd like to see the insight of the denizens of the OP Forums.
When it comes to a character: is his path predetermined, or does he evolve?
I know a great deal of my characters had intricate backstories, goals and drives, and every time I played them, those goals and drives got changed and warped into something I never quite imagined. I wanted my character to advance to be the greatest fighter to ever be known, but suddenly he was taking levels in ranger, and a few in mage-craft! I was baffled at myself until I discovered - the character had taken on a life of it's own, outside of my own creation: There was no metagaming. No plan to go from Power Attack to Cleave to Greater Cleave. The character decided that his personality, his fighting style, would subtly continue to shift, as did his personality. And I loved every minute of it. It seemed completely natural, and completely organic.
How many of us have been completely, utterly taken aback by something we *knew* our characters would do, but never expected it? But looking back, we know that it never _ever_ could have gone any other way?