A guitar that tunes itself!
From the maker: "Perfect Tuning. Perfect Intonation. Instantly. With the simple push of a button on the new Peavey® AT-200™, guitar players can now create music in perfect tune and pitch. The Peavey AT-200 features Antares® Auto-Tune® for Guitar with String Tune and the Solid-Tune™ intonation system, two technologies that work together to bring the clarity of perfect pitch to this high-quality instrument.
With the Peavey AT-200, you can even switch into alternate tunings like Drop D, Open G, Baritone and more instantly by adjusting your finger positions when engaging the Auto-Tune for Guitar feature. And no bulky, unattractive hardware weighs down the playing experience - the Peavey AT-200 looks, plays and sounds just like a conventional guitar. Exactly the way it should."
You can purchase one here.