Complex sentence: It was a reality TV show (actually a parody of reality game shows) that began airing in August 2004 and involves a setup that is reminiscient of the movie "The Truman Show".
Split into simpler sentences: It was a reality TV show (actually a parody of reality game shows) that began airing in August 2004. It involves a setup that is reminiscient of the movie "The Truman Show".