Dysfunctional families are a popular theme in movies, but some families are more fucked up than others.
An old tag of mine that deserved its own list. Some of them aren't really about family issues but have at least one such memorable scene. There should also be way more movies on this list, so feel free to refresh my memory. (Movies like Texas Chain Saw Massacre doesn't count, supporting and loving murder maniacs-movies, that is)
... oh, and SPOILER ALERT!