Conflict

One of my favorite conflicts from a movie is in Forrest Gump.  It's narrated by Forrest as he looks back on his life.  There are many conflicts in his everyday life since he gets looked down on because he's "stupid".  However, he doesn't completely understand the situations he's in and he doesn't see how crude the world is.  The conflicts start from the beginning of the movie when he's talking to people and they look at him funny, but he keeps talking anyway. He also looks back on his life which doubtlessly include conflict.
For example, his grades weren't high enough to go to a regular school, but his mom does what she has to do to get her son in. Later on he gets to go to college for a football team because of his outstanding running skills. Forrest even becomes a soldier during the Vietnamese War and meets Bubba, but he dies in his arms. I could elaborate and go on and on, but I'm sure we've all watched this movie. If you haven't watched it I suggest you do so as soon as possible.

Conflict occurs in everyday life as well. Sometimes we have a bad day with one problem after another.
Such a chain of conflicts can be exhausting or even overwhelming. For example, one time my friend got sick at school and started throwing up, but her school is really far from her house, so she had to wait until the end of the day. She had a hard time getting home because $20 were taken by a train station machine. On top of this she missed one of her busses and got home about half an hour later than usual.  At home her parents were tense and they scolded her for getting home late and assumed she was doing drugs or having sex or something extreme like that. She couldn't even rest much because she had a bunch of AP homework.

This could be used for a film, but I wouldn't use it for mine. If anything, just that concept of a chain of conflict could be incorporated in any film.
It's an effective way to build tension or even lead up to a greater conflict.
I think that the way it's set up in Forrest Gump, the conflicts really get to me, especially in the character's condition.