Robert Downey Jr. a small appearance as Iron Man's alter ego Tony Stark in the 2008 film "The Incredible Hulk", as a part of Marvel Studios' depicting the same Marvel Universe on film by providing continuity among the movies. After "Iron Man", Downey appeared alongside Ben Stiller and Jack Black in the Stiller-directed "Tropic Thunder". The three actors play a Hollywood archetype—with Downey playing self-absorbed multi-Oscar-winning Australian method actor Kirk Lazarus—as they star in an extremely expensive Vietnam-era film called "Tropic Thunder". Lazarus undergoes a "controversial skin pigmentation procedure" in order to take on the role of African-American platoon sergeant Lincoln Osiris, which
Robert Downey Jr. required Downey to wear dark makeup and a wig. Both Stiller and Downey feared Downey's portrayal of the character could become controversial: When asked by Harry Smith on CBS's "The Early Show" who his model was for Lazarus, Downey laughed before responding, "Sadly, my sorry-ass self". Released in the United States on August 13, 2008, "Tropic Thunder" received good reviews with 83% of reviews positive and an average normalized score of 71, according to the review aggregator websites Rotten Tomatoes and Metacritic, respectively. It earned US$26 million in its North American opening weekend and retained the number one position for