There are certain things you can expect each console generation -- better graphics, enhanced sound, less money in your bank account, etc. Every now and then, a key feature is introduced that takes takes consoles to a new level. It seems quaint now, but the inclusion of DVD in the PlayStation 2 was huge -- it turned consoles into devices for movies and games. Microsoft revolutionized online console gaming with Xbox Live. Today's machines stream movies, browse the web, allow for social networking, and more. While this generation is still going strong and still has several years to go, it's always fun to think about what's next.