The point where a movie/TV series sets itself up as a valid target for this type of analysis is when they've tried to justify a plot point with science.
Originally Posted by EDG_
That's why Star Trek is picked to pieces and Star Wars isn't as much (except for the Kessel run oops).
If they go "this is just how things are, accept it" then the science won't get picked apart. On the other hand if they try to explain something without using techno-babble, they're fair game.
You'll note that the Riddick series also has FTL drives, telepathic FTL communication, semi-corporeal species and a concept of a soul that can be physically interacted with, these are not picked apart as they are part of the SF shift that defines the axioms of that universe.
For Pitch Black, the fundamental plot of the movie was driven by an astronomical phenomenon that was described in terms that made it clear it was supposed to be possible in this universe and that makes the astronomy of the movie fair game.
Reductionist and proud of it.
Being ignorant is not so much a shame, as being unwilling to learn. Benjamin Franklin
Chase after the truth like all hell and you'll free yourself, even though you never touch its coat tails. Clarence Darrow
A person who won't read has no advantage over one who can't read. Mark Twain