The fourth installment in the horror-parody franchise combines plot elements from The Grudge, The Village, and War of the Worlds, with abbreviated spoofs of Saw, Brokeback Mountain, and Million Dollar Baby. The amount of screen time allotted to each movie is roughly proportional to its box office take, suggesting that the first draft of the screenplay was written on a calculator. David Zucker (Airplane!) directed; with Anna Faris, Craig Bierko, Regina Hall, Anthony Anderson, Simon Rex, Leslie Nielsen, Bill Pullman, Charlie Sheen, and Michael Madsen. PG-13, 83 min.