Yeah, but if you haven't played Guitar Hero, you should really play it. It's fun as hell and bonus, it warms up your fingers pretty good so it's a great game to play before practicing! Yay!

Still, the whole idea of fun is to play something that you would not normally or can do in real life.
I see this "game" as a practice tool rather then a full fledged game. I'm sure for people like us, it'll be fun as hell, but I don't think the average Joe would find Sweep picking arpeggios repeatedly much "fun"

A Metronome IS a high-score.
Imagine, every BPM higher is another stop closer to Petrucci's high score!

Guitar Hero 3 is available for the XBox360, PC, Wii, Playstation 2 & 3 and now Gameboy DS.
For the consoles and the PC, you can use the normal controller (which sucks), or shell out for the Guitar Controller.

All the info you need here: http://en.wikipedia.org/wiki/Guitar_Hero