A Christmas Too Many (2007)

After 10 years of family squabbling, the Myers family returns to California to spend Christmas together with the Matriarch of the Family in order to patch up old wounds. With the whole family in attendance, what starts out as a nice family event goes comically wrong when Grandma dies and the family, all afraid of ruining Christmas, refuse to acknowledge her death. Further complicating matters, everyone thinks that cousin Sonny who seems to have Mafia related ties, has off'd Grandma to get a hold of her fortune. When Sonny's Mafia friend arrives, it becomes everyone's job to try to make Grandma look alive, in order to save Christmas and they think, their lives.