Stunt
A stunt is an unusual and difficult physical feat or an act requiring a special skill, performed for artistic purposes usually on television, theaters, or cinema. Stunts are a feature of many action films. Before computer generated imagery special effects, these effects were limited to the use of models, false perspective and other in-camera effects, unless the creator could find someone willing to jump from car to car or hang from the edge of a skyscraper: the stunt performer or stunt double.He is usually very skilled. Types of stunt effects. Practical effects. One of the most-frequently  used practical stunts is stage combat. Although contact is normally avoided, many elements of stage combat, such as sword fighting, martial arts, and acrobatics required contact between performers in order to facilitate the creation of a particular effect, such as noise or physical interaction. Stunt performances are highly choreographed and may be rigorously rehearsed for hours, days and sometimes weeks before a performance. Seasoned professionals will commonly treat a performance as if they have never done it before, since the risks in stunt work are high, every move and position must be correct to reduce risk of injury from accidents . Examples of practical effects include tripping and falling down, high jumps, extreme sporting moves, acrobatics and high diving, spins, gainer falls, "suicide backflips," and other martial arts stunts. Stunt airbags (or "stunt mats"), large deep airbags that may be the size of a small swimming pool, are typically used by professional stunt performers to cushion their landings from staged falls from heights. Mechanical effects. A physical stunt is usually performed with help of mechanics. For example, if the plot requires the hero to jump to a high place, the film crew could put the actor in a special harness, and  use aircraft high tension wire to pull them up. Piano wire is sometimes used to fly objects, but an actor is never suspended from it as it is brittle and can break under shock impacts. "Hero" (2003) and "House of Flying Daggers" (2004) are examples of wuxia films that use kung-fu and are heavily reliant on wire stunts. The Matrix is an example of extensive wire and rigging work in Western cinema. Vehicular stunts. Performers of vehicular stunts require extensive training and may employ specially adapted vehicles. Stunts can be as simple as a handbrake turn, also known as  the bootleg turn, or as advanced as car chases, jumps and crashes involving dozens of vehicles. Rémy Julienne is a well known pioneering automotive stunt performer and coordinator. A Guinness Book of World Records holder stunt driver, Bobby Ore, performed in numerous movies and events and holds a world record for longest distance driven on two wheels in a London double decker bus (810 feet). Aviation stunts go back to those performed in balloons in the 18th century. After the advent of powered aircraft in 1903, barnstorming and aerobatics came into existence. Ormer Locklear invented or helped develop many of  the basic tricks of stunt flying, which included wing walking and transferring between airplanes in mid-air. Hollywood and the public's fascination with aviation made great demands on stunt pilots, resulting in many injuries and fatalities. Computer-generated effects. In the late 20th century stunt men 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. 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. Hong Kong action cinema. In 1982, Jackie Chan began experimenting with elaborate stunt action sequences in "Dragon Lord", which featured a pyramid fight scene that holds the record for the most takes required for a single scene, with 2900 takes, and the final fight scene where he performs various stunts, including one where he does a back flip off a loft and falls to the  lower ground. In 1983, "Project A" saw the official formation of the Jackie Chan Stunt Team and added elaborate, dangerous stunts to the fights and slapstick humor (at one point, Chan falls from the top of a clock tower through a series of fabric canopies). "Police Story" (1985) contained many large-scale action scenes, including an opening sequence featuring a car chase through a shanty town, Chan stopping a double-decker bus with his service revolver and a climactic fight scene in a shopping mall. This final scene earned the film the nickname "Glass Story" by the crew, due to  the huge number of panes of sugar glass that were broken. During a stunt in this last scene, in which Chan slides down a pole from several stories up, the lights covering the pole had heated it considerably, resulting in Chan suffering second-degree burns, particularly to his hands, as well as a back injury and dislocation of his pelvis upon landing. Chan performed similarly elaborate stunts in numerous other films, such as several "Police Story" sequels, "Project A Part II", the "Armor of God" series, "Dragons Forever", "Drunken Master II", "Rumble in the Bronx", and the "Rush Hour" series , among others. Other Hong Kong action movie stars who became known for performing elaborate stunts include Chan's Peking Opera School friends Sammo Hung and Yuen Biao, as well as "girls with guns" stars such as Michelle Yeoh and Moon Lee. Other Asian cinema stars also known for performing elaborate stunts including Thai actor Tony Jaa, Indonesian actors Iko Uwais and Yayan Ruhian, and Indian actors Jayan, Akshay Kumar, Vidyut Jammwal and Tiger Shroff. Recognition of stunt performers. Films such as "Hooper" and "The Stunt Man" and the 1980s television show "The Fall Guy" sought to raise the profile of  the stunt performer and debunk the myth that film stars perform all their own stunts. Noted stunt coordinators Hal Needham, Craig R. Baxley, and Vic Armstrong went on to direct the action films "The Cannonball Run", "Action Jackson", and "Joshua Tree". Vic Armstrong became the first stuntman to win both an Academy Award (for developing a descender rig as a safe alternative to airbags) and a BAFTA award (for lifetime achievement in film). But the status of stuntmen in Hollywood is still low; despite the fact that few films of any genre or type could be made without them, stunt  performers are still perceived as working mainly in action films. Repeated campaigns for a "Best Stunts" Academy Award have been rejected. In 2001, the first "World Stunt Awards" were presented in Los Angeles by actor Alec Baldwin. The event had A-list stars presenting the statues to Hollywood's unsung heroes. Arnold Schwarzenegger was presented with the first "Lifetime Achievement" award. He presented the awards in 2001. The awards show hands out eight awards: Best Fight, Best Fire Stunt, Best High Work, Best Overall Stunt by a Stunt Man, Best Overall Stunt by a Stunt Woman, Best Speciality Stunt, Best  Work with a Vehicle and Best Stunt Coordinator or 2nd Unit Director. Equality in stunts. In past Hollywood films it was common for men to double for women and white American stunt performers to double for African American performers, in a practice known as "wigging". Veteran stunt man Dave Sharpe, a man of shorter than average height, often doubled for women in film serials of the 1930s and '40s. Veteran stunt performer Jeannie Epper, who doubled for Lynda Carter in "Wonder Woman", explained that the situation improved in the 1970's as actresses did not want to be doubled by  men, and could be more convincingly doubled by a woman. SAG-AFTRA union rules for stunt performers say that that to double an actor of a different gender or race the stunt must be so dangerous that there are no volunteers available of the appropriate gender or race. For example, in "A View to a Kill", stuntman B.J. Worth doubled for the black Jamaican actress Grace Jones whose character parachuted off the Eiffel Tower. The future of stunt work. A backlash against dangerous stunts followed the fatal 42-foot backward fall of Sonja Davis off a building on the set  of "Vampire in Brooklyn". Despite speculation that developments in computer-generated imagery (CGI) would make stunts unnecessary and reduce stunt performers to the status of body doubles, stunt work has increasingly been made safer and enhanced by CGI effects; nevertheless, stunt performers remain essential to provide a human quality to the action.