Artificial Neural Nets Thread

I've been working with ANNs for a few years, nothing big but a little here and there. I don't think it makes sense to use them in most games, but is anyone aware of any games that have used ANNs?

Also any games use Q leanrning?

Neural networks tend to be big black boxes, making them hard to tweak and tune and debug, which makes them hard to use effectively for video games. I'm not aware of any large games that use them. There's Nero, but that looks like more of a research experiment.

This StackOverflow article has some examples.