Re: My problem with SF on TV and film today.
Well, there's a few factors, I suspect, but for me the problem is as often as not bad and lazy writing. I've seen some SF that really would be outwritten by a computer game plot. The whole questioning, challenging element of SF is often replaced on the screen by a sort of special-forces-on-the-moon that makes Warhammer look like Das Boot.* There are exceptions, and some are done much better than others, but still...
Speeches in SF blockbusters are beginning to become a pet hate of mine, especially the ones written by randomly choosing nouns from Churchill and/or the Constitution. "Today, we stand together as brothers, to face the first darkest dawn of mankind's new hour! An hour of madness. An hour of fear. An hour of liberty. I say never! Never shall humanity fight to allow our freedom not to be stolen from us..." Yawn. If you're not Shakespeare and you're not doing it for laughs, please don't put speeches in.
*In fairness I should add that daft, big-budget war films of the Where Eagles Dare variety, where our chaps kill thousands of baddies and war is more fun than it is hell, aren't and probably can't be made any more. I think SF has taken over this role to a certain extent, as per Aliens and Starship Troopers, neither of which is bad.