The Social Network
Contrast -
In this scene, we see Mark introducing the idea of Facebook to Eduardo. However, the scene is intercut with another scene of Eduardo filing a lawsuit against Mark. These two scenes are purposely intercut together to create a contrast between them. One shows the hopeful beginning, the other shows the bitter end.
Parallelism -
In this scene, we see Mark in two separate situations being intercut into one scene. These two situations create a sense of parallelism due to their relation to one another. In both situations, Mark is being sued for reasons unknown to the viewer up to this point. The scenes parallel each other due to their nature.
Simultaneity -
This scene cuts back and forth between Mark in his dorm and other students out partying. Together, since these two scenes are occurring at the same time, they create a sense of simultaneity.