If you enjoyed Matt’s post about the original Super Mario Bros. check out this video about Super Metroid’s hidden tutorials. I had posted this years ago internally while working at Automattic in a thread about new-user experience, specifically in regards to how WordPress (both .org and .com) can learn a lot from video-game design.
I think this still holds true, both for new users and for how new features are rolled-out and introduced to users that have already achieved mastery with the platforms. Even if you don’t like or never played the Metroid series, this video may inspire you to do so.