Christopher Reeve's oldest son Matthew Reeve tells PEOPLE at the New York City premiere of the documentary 'Super/Man: The Christopher Reeve Story' that his mother Gae Exton "is incredibly brave to tell her side of the story" of their family's history in the new movie.

The Christopher Reeve Story” reconstructs the star’s life and career both before and after his fateful accident, ultimately rendering a sensitive, harrowing and incredibly human portrait of the man as actor,

The Christopher Reeve Story” soars to extraordinary heights with Rotten Tomatoes critics. Click in to read what they have to say.

The Christopher Reeve Story" shows us how the man beneath the cape embraced off-screen heroism by accepting his own vulnerable humanity.

Reeve's three children, Alexandra Reeve, Matthew Reeve, and Will Reeve, an ABC News correspondent, told "Good Morning America" on Wednesday at the premiere that the film is a tribute to their father's legacy and the lasting impact he had on who they are today.

Robert Redford was apparently considered for the role of Superman in the early stages of production — a fact that got a few laughs from the crowd during the film’s premiere at Sundance, which was founded by Redford. Other A-listers who were in the running included Burt Reynolds, Paul Newman, Arnold Schwarzenegger and Neil Diamond.

The adult children of Hollywood’s Superman talk with Patrick Stoner about his heroic challenge of his devastating injury & the help it gives others.