Action Comics revealed his identity as Superman to Lois Lane. Several major Superman storylines crossed over with "Action Comics" including "Emperor Joker" in 2000 and "Our Worlds at War" in 2001. John Byrne returned to "Action Comics" for issues #827–835 working with writer Gail Simone in 2005–2006. After the "One Year Later" company-wide storyline, "Action Comics" had a crossover arc with the "Superman" series, entitled "" which told of Clark Kent attempting to protect Metropolis without his powers until eventually regaining them. The "Last Son" storyline was written by Geoff Johns and Richard Donner, the director of the 1978 film "Superman: The
Cultural impact of the Guitar Hero series the "Guitar Hero" franchise have exceeded one billion dollars with over 16 million units sold, excluding downloadable content. Over 20 million songs have been sold as downloadable content as of July 2008, and 34 million by May 2009. As of October 9, 2008, the series has sold 23 million units with sales of US$1.6 billion, and as of May 2009 has earned US$2 billion at retail. Activision claims that "Guitar Hero" is the third largest video game franchise after the "Mario" and "Madden NFL" series, and is present in over 15 million households. "Guitar Hero: World Tour" along with other