I do the videogame music thing too
my favorite is Tetris.
Lately I've discovered a new talent. I know next to nothing about pianos, yet I can find the exact note I need, just by pressing a key that I think is in the correct spot. I don't know the name of the notes I'm hitting, but if you play a note on the piano while I'm not looking, and then let me try to find it, I can get it in one hit. :S
My "gift" is numbers, so I've yet to explain this new ability. :S