People do crazy stuff like this!
[youtube=425,350]http://www.youtube.com/watch?v=bXjbMIZzAgs[/youtube]
The guy hooked up his Christmas lights to the output on Guitar Hero - you can see the notes on the garage door. Get an interested body to hook up their GH guitar, cue up the song, and go nuts!
If you had the time and the money to do something like that, you would...then again, so would I.