ShortofStories at 2012-09-02 18:42:58:
Gotta gather some other examples, as most of the ones here are more about changing a point of view in order to design a story, which is certainly a top-notch way to come up with something cool. So does gender change.
I don't like to believe that hated movies are the right motivation, because you may hate a movie for so many reasons... I believe that the right kick-off is disappointment. Whenever you hear a logline from a project and raises some expectation and then the pitch disappoints you completely. A good concept ruined by a bad story, that's what motivates me the most.
I have a recent story about a pitching for a short film. I've received a logline 2 days earlier and thought it had tons of potential, i went to the meeting full of ideas. And then the full plot came up and it was such a waste of concept i kept my mouth shut otherwise i'd really hurt the guys' feelings (i'm a bit rude in these situations)