After the news of the passing of Christopher Reeve hit the airwaves, players of the massively multiplayer online role-playing game City of Heroes gathered together for a memorial for the fallen hero. Players gathered in full hero garb and saluted in tandem in memory of the man best known for playing Superman on the big screen. Reeve, who became a champion of spinal cord research following a paralyzing horse riding accident in 1995, died Monday as a result of heart failure stemming from an infection related to his paralysis. He was 52 years old.