His name is Marc Ribot, but I'm not sure many people would call him a rock star... I guess he's better known in jazz and avant garde circles, though he plays a bit of everything. The stick version of him is hilariously spot on - his hair is always a mess and he always has a pair of reading glasses worn on one of those "sport band" eyeglass straps so they won't slide off when he's playing (in the avatar, they are hanging around his neck). And the stick-guitar is a pretty good facsimile of his Fender Jaguar
You can admire the full-size version here!
http://home.comcast.net/~sarahv1/StickMarc.png