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Mark O’Brien, Warner Bros. Veteran and Founder of Mighty Oak Entertainment, Dies at 63

Mark O’Brien, a longtime syndication sales executive for Warner Bros. and founder of Mighty Oak Entertainment, has died. He was 63. O’Brien died Nov. 9 at his home in Newport Beach, Calif., after battling health problems. For the past 15 years, O’Brien headed Mighty Oak Entertainment, a production and distribution company that produced comedy and […]

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