Mrs. Doubtfire (1993) - Loving but irresponsible dad Daniel Hillard (Robin Williams), estranged from his exasperated spouse (Sally Field), is crushed by a court order allowing only weekly visits with his kids. When Daniel learns his ex needs a housekeeper, he gets the job -- disguised as an English nanny. Soon he becomes not only his children's best pal but the kind of parent he should have been from the start. Not surprisingly, the film won an Oscar for Best Makeup.
Napolean Dynamite (2004) dir. by Jared Hess. A listless and alienated teenager decides to help his new friend win the class presidency in their small western high school, while he must deal with his bizarre family life back home.