"Scary Movie 4" is a 2006 comedy film that parodies popular horror and science fiction movies. Directed by David Zucker, it features a mix of familiar characters and new faces, including Anna Faris and Regina Hall. The film humorously references films like The Grudge, War of the Worlds, and Saw. The plot follows Cindy Campbell, who investigates a mysterious house while dealing with an alien invasion. As she navigates through various absurd situations, the film delivers a series of comedic sketches and gags, maintaining the franchise's signature blend of slapstick humor and pop culture references.