Seemingly embraced by countless avid moviegoers, the supernatural force found in this summer’s most successful movies is gearing up within two post-summer flicks to be released this Friday--the Kevin Bacon vehicle "Stir Of Echoes," and the religiously-based thriller "Stigmata." They follow on the heels of three or more mega-popular horror-based films that arrived sometime this summer, including the recent box-office survivor "The Sixth Sense" starring Bruce Willis. One has difficulty finding the words to describe the sudden success of this genre, especially when the years preceding it were filled with no more than dumb slasher movies and poor commercial business. Nonetheless, the financial and (sometimes) critical figures speak for themselves: horror movies are hip again. It is no question as to whether these two upcoming movies might experience the same kind of commercial success as the others have.