From the makers of Guitar Hero there now is Phase
Really cool Guitar Hero game
Works perfect with scrollwheel+buttons
For a good preview check iTunes store
btw. Price is only $5
Im going to buy this one for my classic
Also you can use it with your own song atleast i saw that some where so im not sure if its true
Edit:
iTunes says it can use a song from iTunes library so now its officialy super cool
EDIT:
This is the website
http://www.phasegame.com/
iTunes 2.5 contains software to sync music with game so notes work fine
Really cool Guitar Hero game
Works perfect with scrollwheel+buttons
For a good preview check iTunes store
btw. Price is only $5
Im going to buy this one for my classic
Also you can use it with your own song atleast i saw that some where so im not sure if its true
Edit:
iTunes says it can use a song from iTunes library so now its officialy super cool
EDIT:
This is the website
http://www.phasegame.com/
iTunes 2.5 contains software to sync music with game so notes work fine