I swear, my Journey cover band was having a hell of a time trying to get started and I finally found out why. I could never get my guitar tuned right to handle those sick Journey riffs, so it would end up being way off or we would spend our entire jam session trying to tune the guitars correctly. Much to my delight String Master has released their Robotic Guitar Tuner. Yeah, these things have been around for a while, but this one is special, mostly special by being cheap, $50 cheap. Attach the robot to a peg, give the string a pluck and in no time you will be getting boo'd out of bars nationwide.
The String Master Robotic Guitar Tuner [OhGizmo!]