Even in this movie, Heinlein foresaw some things
I remember watching PROJECT MOONBASE as a kid and even then thought it was silly, and a bit tedious even at only 64 minutes (of course, in those days it seemed longer, with commercials). Still, consider some of the eerily accurate projections seen in this film....
-- The spacecraft that lands on the moon looks amazingly like the real LEM that did make the landings -- and a far cry from the rocketships seen in even the better '50s sci-fi movies.
-- The film takes place in 1970 -- only one year off from the date of the actual first moon landing. Not a bad guesstimate for 17 years earlier.
-- There's a woman president. Which there might well be in 2009; at any rate, it's no longer just a sexist fantasy (as seems to be the underlying case in the film). (Update 1/3/09: Okay, so there'll be no female president in 2009. But not even Robert Heinlein could've imagined a black president [and I'm not sure he would have been too happy at the prospect]. Given the way blacks were still being portrayed in films as late as 1953, the very idea would have been as ridiculous as...well, as a black astronaut!)
-- Heinlein even posits a primitive sort of cell phone -- admittedly a very klunky kind of thing, an old-fashioned (pre-1949 style) receiver with a big, flat, circular antenna inconveniently situated at the end of the phone, where you could cut your hand or your mouth if you're not careful. But still, it's a wireless technology, nearly forty years before such things became reality.
The movie might have been reasonably good if they'd invested a litle more effort in it -- money of course, but getting better actors (I hear Olivier was free that week), better script and director, you know, the incidentals. The possibility of an interesting little film was there. Too bad they played it cheap and dumb - no wonder Heinlein hated it. But even so, some of his ideas and forecasts have proven remarkably prescient, a tribute to a great writer and thinker (even if he was obsessed with Commie spies). For all these reasons -- its solid predictions, and its utter hokiness -- I have a bit of a soft spot for PROJECT MOONBASE.