It has been said, sometimes the greatest discoveries are those lost from the past; so I am going to suggest two movies from the past that are must sees. First, for the whole family is Fiddler on the Roof. This classic from thirty years ago, tells the story of a jewish family and their struggles from oppression as well as the timeless struggles with family. The version with Isaac Stern as the soloist is the original and the one to rent.
The Second film I recommend as a teaching tool against drug use. The version of Jeckel and Hyde starring Spencer Tracy. If you have children ages 11 up, this film, although not a film about drug use, the parallel is so obvious that with a brief introduction by you to your child, they will see the parallel easily. In addition, Ingrid Bergman plays a woman caught in an oppressive relationship that she should end, but as so many women that become victims do, she allows it to go on, to her harm. You have to trust me on this, it is an invaluable tool covering two difficult issues to impress your children with and this makes it so easy.