It's fun to get away from myself for a while when I take on these roles that have very different personalities from my own. I get to say things I normally wouldn't say or act in ways I normally wouldn't act. After all, such roles are more challenging because you really have to immerse yourself in the character.
My first encounter with science fiction was reading the work of H.G. Wells when I was nine or ten, and I don't believe 'The War of the Worlds' or 'The Time Machine' have ever been bettered. Plus, I have always had a liking for Victorian and Edwardian clothes and contraptions, which tends to color the worlds I dream up.