Last night I rented several movies.
Watched them all, and noticed several things that just ruin the story line.
1) Love, its so cliche, risking your life for your love and everything.
2) Repeating something someone said, Like in the Matrix Reloaded; Morpheous says "Somethings change blah blah", and later Naobi says the same thing to the captain. Its just stupid.
3) Long sex scenes.

Sure, they are cool, but I mean it has nothing to do with the story. We know they are doing it.
4) Fighting scenes: Some of them are amazing, but you call tell when they go to far in choreopgraphing it. I mean I dont like them dancing, i want them fighting.
Post what ruins a movie for you.