He appeared on Late Night with David Letterman a few weeks ago. He sang Steve Miller's Jet Airliner, dressed like a hobo. When Letterman walked over to congradulate him on his performance, he seemed feeble-minded. I don't know if in fact he is, he just appeared as such. He was in his 50's or 60's (unkept and it made it hard to pinpoint his age). This mystery man did a great job and I was really impressed and am looking to check some more of his music out. But any search for a singer of "Jet Airliner" is always gonna pull up Steve Miller. He was not Steve Miller. Thanks!