Sure, you can make pumpkin soup, buy some fall-spiced candles or purchase some candy for the imminent trick-or-treaters, but nothing really puts you in the Halloween spirit like a little Edgar Allan Poe. And a simple but clever little production over at the Playbill Café on 14th Street serves up just the right dose of humor, horror and just plain creepiness to put you in a sufficiently macabre mood for October. Poe 2000, staged by…