TV Article Scary Movie By EW Staff Published on April 21, 2000 04:00AM EDT Photo: Jack Rowand Need more proof that the postmodern teen-horror flick is dead? The very studio that launched the trend back in 1996 with ”Scream” is releasing this parody of the genre. Directed by Keenen Ivory Wayans and starring Marlon Wayans, Shawn Wayans, and ”American Pie”’s Shannon Elizabeth, this send-up is actually a combo of two scripts bought by the Miramax-owned Dimension Films.