I never thought they could pull off Guitar Hero on the DS, but the did, and I think it works well. Of course, a full-sized guitar controller would be better, but that’s impossible, right?
Nope. A hacker named Eric Ruckman has made a hell of a mod, rigging the DS to a full guitar (a PS2 GH controller), with functional buttons and all. His DS sits inside a special housing in the guitar, and a built-in FM Transmitter pipes the audio to his home theater speakers.