So recently Tammy developed this craze for anything "lap guitar" and then she showed me these 2 videos. Not too sure who's the first guy, but I've been a long time fan of Kelly Joe Phelps (the second one). I actually went to his show in Ann Arbor once; it's amazing what a skillful player can get out of a single acoustic guitar.
Some guy doing some really fancy tapping!
Kelly Joe Phelp's "Goodnight Irene"