If you're the type of person who enjoys picking apart movies, by far the easiest (and most amusing) starting point is to simply rewatch the movie from the villain's perspective. What does the villain actually want? Does the way he's going about it make sense at all? The answers are usually ridiculous.
If you're reading this at work right now instead of finishing that report, keep in mind that you might very well be setting off the plot of movies like these.
If you're one of these creators, you have to hate that your lighthearted entertainment now just winds up reminding people of something awful. Especially when websites like this one keep bringing them up.
There's no easier way to make a movie character likeable than by having him heroically sacrifice his own life. Of course, sometimes 'heroically' means 'stupidly.'
If your movie is about, say, giant robots or ghost police, that's probably not the time to try to cram in some message about how we should vote next November.
Yes, even in the age of computer effects and entire sequences shot in front of a green screen with tennis balls, there is still no substitute for gross neglect of human safety.
Sometimes the companies or creators will actually address their fans and say, 'You think you could do better than us?' And sometimes the fans will answer back, 'Um, actually, yeah.'
Apparently, Hollywood makes stuff up on the fly all the time. Here are some examples of memorable scenes (or even entire movies) that only happened because something went wrong.