A few tracks that spring to mind...
^ The first song he plays in particular. I don't know how, but somehow he makes a tune with only two chords into something spectacular. Must be the hat.
^ Generally, if it wants to keep my attention past the initial 20 seconds, an acoustic song has to be something pretty damn special. Here's another one that always manages it for me. Great vocals, great guitar work - only the modfather eh.
Not a live vid, I know, but all the ones I could find had lame percussive augmentations which take a lot from the song in my eyes.
Well, I did say it was off the top of my head