Bert Jansch & also the Rev. Gary Davis. Without thier influence, I would sound entirely different when I play guitar.
As for this...
Are you having a laugh? What does he do that is so wonderful? It cant be the interpretation because he plays it not for note as per the Albert Lee original on the eponimous Heads, Hands & Feet album (why not cite Lee?). Also, its played at the wrong tempo (so you cant hear it properly) and finally, its a live recording (which you profess not to like). So what is Ricky's impact on your approach to music Steve? Has it inspired you to write bluegrass or something? :-*