Randall Lovitz, physicist turned playwright, died as the result of an unfortunate accident involving a grenade and a jigger of Hendricks. Mr. Lovitz's most recent play, Naked Man Barking, featuring 90 minutes of the same, was panned by the critics. An earlier production: Knock, Knock. Who's there? F__k. F__k who? F__k You garnered similar reviews. Always an iconoclast, the only holiday Mr. Lovitz celebrated was Super Bowl Sunday.