This one out does them all.
I have NO idea of the amount of time and effort that went into to arranging this, but to pull this off makes you shake your head and go "That's cool".
So the story is (ostensibly) this: Matt wanted to ask his girlfriend Ginny to marry him. So he arranged for her to be taken to see Fast Five in movie theater filled with her friends and family (unbeknownst to her). During the previews, a different sort of trailer aired: One in which Matt is shown asking Ginny’s dad for his daughter’s hand in marriage.