The whole panic-stampede when the nanny jumped...
That scene seemed unrealistic in terms of how the party guests reacted. I know it's a movie, blah blah, but even so it seemed a little silly how tables were knocking over and the whole crowd was rushing in different directions freaking out. It's not like someone was there shooting up the place.
"Well let's recap the movie so far: somebody went to Alcapulco and somebody almost bought gas."