Watching people play computer games is very informative: you watch the process in which their brain learns a complex behavior, masters it & improves its effectiveness using the score performance indicator. To make the game more intuitive, it can also provide sensual stream similar to the real world, so that the feedback on the behavior effectiveness is more affective.
As people’s work is becoming more & more computer mediated, computer games can become an interesting training method, as the military & other industries are increasingly adopting. Maybe it would eventually shorten the competence period, that as Peter Norvig claims normally requires 10 years.
Providing Computer Games for Computers may also be a nice way to train them: if they’re provided the same training games as humans have, they can employ simple machine learning & become competent in it. Compare with what David Harel suggests in “Come, Let’s Play“.