character of Apollo Creed. During the 49th Academy Awards ceremony in 1977, Ali and Stallone staged a brief comic confrontation to show the film did not offend Ali. Some of the plot's most memorable moments—Rocky's carcass-punching scenes and Rocky running up the steps of the Philadelphia Museum of Art as part of his training regimen—are taken from the real-life exploits of Joe Frazier, for which he received no credit. Because of the film's comparatively low budget, members of Stallone's family played minor roles. His father rings the bell to signal the start and end of a round; his brother Frank plays a street corner singer, and his first wife, Sasha, was stills photographer. Other cameos include former Philadelphia and then Los Angeles television sportscaster Stu Nahan playing himself, alongside radio and TV broadcaster Bill Baldwin; and Lloyd Kaufman, founder of the independent film company Troma, appearing as a drunk. Diana Lewis, then a news anchor in Los Angeles and later in Detroit, has a minor scene as a TV news reporter. Tony Burton appears as Apollo Creed's trainer, Tony "Duke" Evers, a role he would reprise throughout the entire Rocky series, though the character is not named until Rocky II. Michael Dorn, who would later gain fame as the Klingon Worf in Star Trek: The Next Generation and Star Trek: Deep Space Nine, made his acting debut, albeit uncredited, as Creed's bodyguard. Filming Principal photography for Rocky began on January 9, 1976. Filming took place primarily throughout Philadelphia, with a few scenes being shot in Los Angeles. Inventor Garrett Brown's new Steadicam was used to accomplish smooth photography while running alongside Rocky during the film's Philadelphia street training sequences and the run up the Art Museum's flight of stairs, now colloquially known as the Rocky Steps. It was also used for some shots in the fight scenes and can be seen at the ringside during some wide shots of the final fight. Rocky is often erroneously cited as the first film to use the Steadicam, although it was actually the third, after Bound for Glory and Marathon Man. Certain elements of the story were altered during filming. The original script had a darker tone: Mickey was portrayed as racist, and the script ended with Rocky throwing the fight after realizing he did not want to be part of the professional boxing world after all. Both Stallone and Weathers suffered injuries