guitar players, specially finger pickers, should have a look/listen to Erroll Garner.
I love his playing.
He never plays a tune the same twice, constantly changing it. stopping, starting, tempo, key, melody etc.
brilliant. and always full of joy. do yourself a favour and listen to the man. there are a lot of high quality youtube clips.
but his left hand, check it out, its a song by itself, and guitar players can do something along those lines as well.
so, if you're bored with "misty" check this out: you may never play the tune again.
YouTube - MISTY ERROLL GARNER