There's a rockband thread around somewhere already, but I can't be fagged finding it. So here's a link.
http://www.joystiq.com/2008/11/10/gene-simmons-brings-branded-axe-guitar-to-guitar-hero-and-roc/
http://www.joystiq.com/2008/11/10/gene-simmons-brings-branded-axe-guitar-to-guitar-hero-and-roc/