Ralph Waldo Emerson once said, "Enthusiasm is the mother of effort, and without it nothing great was ever achieved." By that understanding, there has never been anything greater than what is achieved by the hysterically enthusiastic man in the video below. And so, we salute this gentleman who performs a passionate rendition of Michael Jackson's "Beat It" to the obvious, um, "amusement" of his fellow straphangers. He may not have the pipes of the man who passionately sang "Thriller" on a subway, but he more than makes up for it with his flashy limbs-in-fast-forward moves.