The guitar controller and Guitar Hero/Rock Band are such flawless pairings of game and peripheral, we can't really understand the urge to want to play them with something else. That said, we can definitely see the attraction of Aaron Skillman's homemade Scratch Blaster, a portable turntable made for Guitar Hero.
OK Activision and EA/Harmonix/MTV, the race is on. Who will be the first to integrate the controller into a Rock Band-like setting or build a whole game around it? Because if it's half as fun as Skillman's peripheral looks, you can already consider our money in-hand.