I just remembered that TIE fighters make an excruciating screeching sound when they go flying around...in space. Isn't space a vacuum? Shouldn't there be...no sound? And you shouldn't be able to hear the lasers either. It doesn't make any sense. And then (surprise surprise) I was watching Star Trek last night and the intrepid crew started panicking because they were....low on fuel??? You're in space, for crying out loud! Why don't you just turn on the engine, and then turn it off? There's no air resistance, and nothing to slow you down.
It frustrates me.
For those of you who notice "distinct veins" in my writing, my deepest apologies. I had been brooding about this and needed to let it out.