Simulating a low-gravity environment on film

Yesterday's New York Times had a Dave Itzkoff piece talking up Moon, the new SF film by Duncan Jones (aka Zowie Bowie) and starring Sam Rockwell and Kevin Spacey. The movie sounds interesting, and I look forward to seeing it. Itzkoff's article, however, included a throwaway line about the "scientific accuracy" of 2001: A Space Odyssey that woke up my inner Aspergers' child, because seriously, 2001 is a Bible picture for pot-smoking atheists, and the fact that they turn the sound off during the s