Remember Terry Kniess, the guy who made the perfect bid on the Showcase Showdown of The Price is Right? Someone made a documentary about the guy behind that bid, and it’s surprisingly thrilling.

Ted Slauson is a math whiz and The Price is Right superfan who’s attended dozens of tapings of the show and even wrote his own computer program to help him memorize the show’s thousands of different products and games. Using archival footage and Ted’s deadpan talking head interviews, the documentary pieces together how Ted’s savant-level mastery and willingness to feed other contestants exact prices led to some amazing television.

Though amateurish in its choppy editing and overuse of background music, the doc is an effective love letter to one of the most popular game shows ever and a compelling investigation into its unlikely cult hero.