Would you prefer practicing for the next military adventure instead? NASA has worked long and hard trying to disassociate itself from military research.
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We're talking about movies, not reality. That would probably be necessity for extended real space missions, where muscle loss in zero gravity is a very real problem. NASA is currently screwing around with alternatives to the obvious solution, such as exercise machines, and muscle massage. Hopefully, they'll find a solution as artificial gravity has plenty of problems.
However, for the movies, rotating the spacecraft, and not the audience would make the audience suspect that the movie was shot inside a rotating cement mixer. Audience members, that had not lost their last meal watching the rotating screen, would probably experience some level of vertigo. One possible solution is a rotating disk TV, which CBS tried in the 1950's as their solution to broadcasting in color. Another is to issue Dramamine (air sickness pills) with every episode.
The various space shows will also need to modify their hardware to accomodate a rotating spacecraft. For example, the Star Trek shuttle would need to de-spin before landing, or it would drill itself a hole in the ground upon landing. The propellent consumption would not be huge, but since movie spacecraft run on high specific impulse rockets that operate on ejecting mass, more modern ion drive and low specific impulse drives would need some kind of rocket powered de-spin mechanism. Trying to de-spin with an ion drive would take years.
Incidentally, I used to watch the NASA channel when I had trouble going to sleep. Never have so many, done so much, to make the exitement of space exploration, so boring.