Michael Close's card tricks were filmed nonstop, in just one take.
The "Jurassic Park" style seismic ripples seen in the glass of soda near the end of the film were created by the actual activity shown in the basement - no special effects were used.
In the University of Michigan study cited in the documentary, a clip from "The Bridges Of Madison County" raised women's progesterone levels by up to 10%. A clip from "The Godfather II" raised men's testosterone levels by up to 30%.
The "Economics 101" scene was posted on YouTube in early 2007 and the link was emailed to every US Senator, warning them of a pending economic crisis.
The documentary's protagonist, Ken Close, tested for admittance into Mensa two months prior to the start of principal photography. He felt his Mensa membership was needed to add credence to the project. Had he failed to score high enough (top 2%) on the I.Q. test to qualify for Mensa membership, the documentary would have been cancelled.