9. Freakonomics
Site rank 6, IMDb rank 2; Overall Score = 8
Directed by Heidi Ewing, Alex Gibney, Seth Gordon, Rachel Grady, Eugene Jarecki, and Morgan Spurlock
Based on the bestselling book with the same title by economist Steven D. Levitt and writer Stephen J. Dubner, Freakonomics is a collection of several documentaries that challenge our understanding of how the economy works. It reveals that some of the most entrenched beliefs are in fact nothing more than myths. The film explores some interesting ideas, like whether can we increase the success rate of struggling students if we offer them monetary rewards or how Roe v. Wade affected crime rates in US cities. It is fascinating to see how seemingly completely unrelated events can affect each other.