Behind the Mask: The Rise of Leslie Vernon (2006): Starring Freddy Krueger - the real one (with apologies to Jackie Earl Haley, who was excellent as Rorschach in Watchmen). With a brief, blink-and-you'll-miss-it wordless cameo by Jason - also the real one (a.k.a. Kane Hodder). And Zelda "This house... is clear!" Rubenstein! Plus some other random dudes and dudettes.
Perhaps one of the most important films to arrive on the horror movie scene in years. Seek this one out, and see it!