One of the most amazing displays of prowess on a guitar I have ever seen is Tommy Emmanuel performing "Classical Gas"
http://www.youtube.com/watch?v=zBEbYXa6Cik
Another is Andy McKee
http://www.youtube.com/watch?v=Ki3CLHJrPSc
Both well worth a watch! Make sure you check out Andy McKee on the harp guitar here
http://www.youtube.com/watch?v=Cvar4...eature=related
Simply incredible talent.