I can't put my finger on exactly why, but this was the most interesting answer for me (not in the specifics of anime and computer games, but just in the ubiquity of the winnowing of interests over time due to career and family pressures; even Terence Tao didn't start out all-math, all-the-time!).
He taught in Australia for a little while. I was in one of his classes and I watched some Roruoni Kenshin with him. He was probably the best math lecturer I've had. But I was a poor student.