<P> In April 2006, Marvel hired Jon Favreau to direct Iron Man, with the writing teams of Art Marcum and Matt Holloway and Mark Fergus and Hawk Ostby writing competing scripts . Favreau consolidated both into one script, which was then polished by John August . Robert Downey, Jr. was cast in the title role in September 2006, after growing out a goatee and working out to convince the filmmakers he was right for the part . Principal photography began on March 12, 2007, with the first few weeks spent on Stark's captivity in Afghanistan, which was filmed in Inyo County, California . Production also occurred on the former Hughes Company soundstages in Playa Vista, Los Angeles, California, with additional filming at Edwards Air Force Base and Caesars Palace in Las Vegas, Nevada . Iron Man premiered at the Greater Union theater in George Street, Sydney, on April 14, 2008, and was released internationally on April 30, and in North America on May 2 . </P> <P> The film ends with a post-credits scene featuring Samuel L. Jackson as Nick Fury, who approaches Stark regarding the "Avenger Initiative". Favreau said that he included the scene as "a little tip of the hat for the fans...a way to sort of tee up The Avengers ." Jackson was only on set for a day, with a skeletal crew to avoid the news of his cameo leaking . Captain America's shield is also visible in the background of a scene; it was added by an ILM artist as a joke, and Favreau decided to leave it in the film . </P> <P> After being exposed to gamma radiation that causes him to transform into the monstrous Hulk, scientist Bruce Banner goes on the run and isolates himself from his love, Betty Ross . Hunted by the military, Banner seeks to cure himself and prevent his condition from being weaponized . </P> <P> In January 2006, Marvel reclaimed the film rights for the Hulk character from Universal Pictures after Universal failed to meet a deadline to develop a sequel to director Ang Lee's 2003 film Hulk . Universal retained distribution rights for future Hulk films . Instead of moving forward with a sequel, Marvel hired Louis Leterrier to direct The Incredible Hulk, a reboot . Leterrier initially turned down the job out of respect for Lee, but later reconsidered and signed on . The script was written by Zak Penn, who drafted a treatment for the 2003 film . In April 2006, Edward Norton entered negotiations to portray Bruce Banner and rewrite Penn's script, although Penn received sole credit for the screenplay . Production began on July 9, 2007 and filming primarily took place in Toronto, with additional filming in New York City and Rio de Janeiro . The film premiered at the Gibson Amphitheatre on June 8, 2008, and was released on June 13 . </P>

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