Computer-generated effects In the late 20th century, stuntmen were often placed in dangerous situations less and less as filmmakers turned to relatively inexpensive (and much safer) computer graphics effects using harnesses, fans, blue- or green-screens, and a huge array of other devices and digital effects. The Matrix (1999) is an example of a film that extensively enhanced real stunts through CGI post production.[2] The Lord of the Rings film series and the Star Wars prequel films often display stunts that are entirely computer-generated. Examples of computer-generated effects include face replacement and wire removal.