Okay, I've changed my mind. I'm going to find out and write about binaural audio in games, because binaural audio is cool. Although, my question could be to do with what impact the research on binaural audio can have on digital games. Should be cool.
If you've never heard this before: put on headphones, close your eyes, and press play.
I found the following video just now - it's not quite to do with binaural audio, but it's pretty cool anyway.