Rolling Stone reports that Jimmy Castor, the great '70s hard-funk bandleader, died of unknown causes in Las Vegas yesterday. He was 64. As the main behind the Jimmy Castor bunch, Castor perfected a form of nasty, uncompromising dance-funk, perhaps best exemplified by the utterly crushing 1973 hit "Troglodyte." (Chuck Eddy, the great iconoclastic rock critic, ranked the Jimmy Castor Bunch's ...