The Topp Twins: Untouchable Girls (out now) looks at the lives of Jools and Lynda Topp, a yodeling, folk singing comedy duo to come out New Zealand. This is pure, joyous entertainment. I had a smile on my face the whole time. Their songs are terrific but we also see some of the great work they've done in their roles as political activists. This is the year's best documentary. Grade: A.