Uncle Buck (1989)

As an idle, good-natured bachelor, Buck Russell is the last person you would think of to watch his brother Bob's three children. However, during a family crisis, he is suddenly left in charge of them. Unaccustomed to suburban life, he soon charms Miles and Maizy with his hefty cooking and his new way of doing the laundry. His carefree style does not impress everyone though - especially his rebellious teenage niece, Tia, and impatient girlfriend, Chanice. With a little bit of luck and a lot of love, he manages to surprise everyone in this heartwarming family comedy.