With a body shape based on half a pair of sunglasses, Rob O'Reilly's guitars were already a little… out there, but the Irish entrepreneur has now officially upped the ante with the Expressiv Infinity, ...

You're already aware of various guitar-holding, fret-shredding, SP-using methods. You still don't know everything, but who does? In all seriousness, Guitar Hero does require getting your hands dirty ...