You can’t have an explosion in a movie without a big bang, even if that explosion comes from a starship drifting through the vacuum of space. If the USS Enterprise is anywhere nearby, it’s also likely to be buffeted by the pressure waves, and the crew thrown across the bridge.
In a similar vein, it was one of the Weta Workshop guys in the ‘bonus features’ on the Lord of the Rings DVDs whom I first heard point out that swords, coming out of wood-and-leather scabbards, somehow always make a zzzhinggg sound. Whereas in fact…
Well, I’ll let this chap demonstrate:
Thanks to James Fraser for the link!
I never knew Kenny Everett was an expert on swords.
And another peeve is in movies that people walk around with semi-automatic handguns ready to shoot but when they get serious there is the cocking sound. They would have had their gun cocked long before that.