(written from a Production point of view)
Robert "Bob" Theodore McCall (23 December 1919 – 26 February 2010; age 90) was an artist known for his space exploration-themed artwork. He was one of the production illustrators on Star Trek: The Motion Picture. Succeeding Maurice Zuberano as lead illustrator for the V'Ger concept, a very important part of his responsibilities was the pre-production visualization for the producers of it and the interactions with it. One of his (non-Star Trek related) paintings was on display in a lounge on board the USS Enterprise in The Motion Picture. 
His work on The Motion Picture notwithstanding, he is perhaps best remembered for creating the poster artwork for Stanley Kubrick's acclaimed 1968 science fiction film, 2001: A Space Odyssey.
McCall's work first acquired recognition when several of his paintings were featured in LIFE magazine for a series of stories on the future of space travel. Author and Star Trek The Motion Picture scientific advisor Isaac Asimov described McCall as the "nearest thing to an artist in residence from outer space." 
McCall created a number of stamps and insignia patches for NASA during the 1960s and 1970s, including the Apollo 17 mission patch. He also created murals for the walls of the Smithsonian Institute, the Pentagon, EPCOT, and Johnson Space Center. His most famous piece is believed to be "The Space Mural, A Cosmic View," a six-story-high painting on display in the National Air and Space Museum in Washington, DC.  
In addition to his work on 2001 and Star Trek, McCall created the poster artwork for the films Tora! Tora! Tora! (1970), and Disney's The Black Hole (1979).  He also created the art for twenty-one space-themed United States postage stamps. In 1982, he published his own book, entitled The Art of Robert McCall: A Celebration of Our Future in Space. 
- "Robert McCall", Star Trek: The Magazine Volume 2, Issue 8, December 2001, pp. 70-73