Christopher Reeve state funds to stem cell research. Proposition 71 was approved less than one month after Reeve's death. On February 25, 2003, Reeve appeared in the television series "Smallville" as Dr. Swann in the episode "Rosetta". In that episode, Dr. Swann brings to Clark Kent (Tom Welling) information about where he comes from and how to use his powers for the good of mankind. The scenes of Reeve and Welling feature music cues from 1978's "Superman: The Movie", composed by John Williams and arranged by Mark Snow. At the end of this episode, Reeve and Welling appeared in a short spot
Superman (Salkind films) where once again he comes face to face with Luthor and his new creation from Superman's DNA called Nuclear Man. A spin-off film called "Supergirl", based on the comics character Supergirl, starred Helen Slater as the cousin of Superman. Christopher Reeve was originally planned to have a cameo appearance in it but bowed out early on. The development process behind the creation of DC Comics character Superman in the "Superman" film by Mario Puzo, David Newman, Leslie Newman and Robert Benton was conceived when Ilya Salkind bought the rights for Superman in film. Many A-list directors and actors were sought