Music Man Murray, the trailer

Richard Parks' documentary film about epic Los Angeles record collector Murray Gershenz, who turns 90 in May, debuts on The Documentary Channel on April 21 and will also be on NPR's All Songs Considered website, Parks says. Gershenz has the world's largest private collection of vinyl records, something like 400,000 of them, in a building marked Music Man Murray at 5055 Exposition Boulevard. These days he's also an actor who has been on "Parks and Recreation," "Mad Men," "Modern Family" and "The Sarah Silverman Program." He also was in "The Hangover" and "I Love You, Man," per IMDb.