But unlike in the credits of most films, the names were not just those of actors and production crew, but of the nearly 10,000 backers who funded the movie through Kickstarter. Indeed, the documentary was always made for the character's many fans, said Nimoy's son, Adam Nimoy. After a screening last night (April 18), Adam Nimoy took the stage to describe the documentary's evolution and the tricky balance between exploring Leonard Nimoy as an actor and as a father, and talked about the world's fascination with his father's most famous character, the logical alien Mr. Spock.

"That's really what the film is about," Adam Nimoy told the audience here at the Tribeca Film Festival screening. "It's my gift to the fans to celebrate and to process the loss of my dad." 

Adam Nimoy was joined on the stage by actor Zachary Quinto, who portrayed Spock in the recent reboot series of the "Star Trek" films (starting in 2009). Quinto worked closely with Nimoy to develop his character for the film. Also on stage were the documentary's producer, David Zappone and Scott Mantz, a film critic and "Trek" fan. Gordon Cox, an editor at Variety, moderated the panel.