Oh, I'm nerdy about science fiction and fantasy and graphic novels and reading, and I'm nerdy about board games. My favorite board game is a board game I'm working on right now. It's a game of Napoleonic era naval warfare, and it's going to be fun.
The way in which mathematicians and physicists and historians talk is quite different, and what a physicist means by physical intuition and what a mathematician means by beauty or elegance are things worth thinking about.