It's no secret that I'm a huge fan of the rhythm game genre on my Xbox 360. I personally own Guitar Hero II, Guitar Hero III: Legends of Rock, Guitar Hero: Aerosmith, Guitar Hero: Metallica and Rock Band, and this list will only continue to grow (Can we say, Guitar Hero: Van Halen?).
Ars Technica has a great list of five rules all these games and future ones should follow. They're all pretty simple and make total sense. Activision, Red Octane, Harmonix and everyone else involved in the video game genre need to take these rules as gospel as well.
Guitar hero is a great hobby, we've got typical family nights as a group and play.