Hi I need some help trying to think of a title to a movie, I can't remember all the details, but here it goes.

The movie is set at christmas, and the main actor (unknown) breaks into a house that contains a rich family. However the house has people in it and it's a family and they are always arguing, so he has to counsel them throughout. As the movie develops more and more of the family arrives including the mother in law, and the main actor has to try and stop them from arguing. Anyway it's a black comedy made I think in the early 90's.

Sorry its not the best description in the world.

Any help on this would be appreciated.