^Nope, that's new to me. Pretty funny. :) I kinda doubt he would've known about this guy, though, as he was a 17 or 18-year-old Californian kid when he made up the character. Lord Buckethead does predate the guitarist by a year or two, though.
I'll have to mention him at the Buckethead forum and see if any of our UK friends know him. Is the movie any good?