Here's a thread dedicated to showcasing anything you've learned from playing games. Doesn't have to be serious, but if you did actually learn something from playing games, share that too.

Silent Hill taught me that 99% of all door locks will be broken and unable to open.

Final Fantasy IV taught me that Bards suck and that's why they don't exist anymore.

Ocarina of Time taught me that no matter how high you fall, just forward roll when you hit the ground and you won't get hurt. ^^

Bioshock taught me that gathering the world's best and brightest to live in an underwater utopia free of moral and ethical constraints is probably a bad idea.....also that just living underwater is a bad idea, period.