5. Elvis Presley
Elvis Presley's final few tours were sad affairs where an increasingly bloated King huffed and puffed his way through limp versions of his hits. There were, however, moments of brilliance. One night in June of 1977 in Rapid City, Iowa he sat down at the piano and belted out a gorgeous rendition of "Unchained Melody." Knowing he'd die just two months later makes this video even more gut-wrenching to watch.