Denver appeared in several films and television specials during the 1970s and 1980s, including the 1977 hit "Oh, God!", in which he starred alongside George Burns. He continued to record into the 1990s, also focusing on environmental issues as well as lending vocal support to space exploration and testifying in front of Congress to protest censorship in music. He lived in Aspen for much of his life, where he was known for his love of Colorado. In 1974, Denver was named poet laureate of the state. The Colorado state legislature also adopted "Rocky Mountain High" as one of its two state songs in 2007.