Well, one of the great (and possible) things in AI I want to see is learning AI that is usable in commercial AI. They spot patterns, as well as look at what works best and learn from it. This would mean two wonderful things:

1. AI that adapts in the best possible way to beat YOU.
2. Game developers won't program complex AI tactics, they'll TRAIN it.

That sounds like a lot of fun doesn't it... never a better excuse to play a game