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NEW YORK, NY - DECEMBER 03: Actor Michael Richards attends the "Kirstie" premiere party at Harlow on December 3, 2013 in New York City. (Photo by Robin Marchant/Getty Images)

July 24th marks the 70th birthday of Michael Richards, who’ll always be best known as Cosmo Kramer on Seinfeld. Hard to imagine Kramer as a 70 year old!

On Wayback Wednesday, here’s a great collection of Seinfeld show bloopers, showing how Kramer reacted when his fellow cast members blew a scene by laughing. It’s amazing that Richards, who played the wackiest character on that classic show, kept playing it straight, trying to get through the scene.