Ken Estin began his career as a free-lance writer whose first professional script was a Taxi episode for which he won the Writers Guild Award. Ken became the showrunner (head writer-producer) of Taxi 2 years later when he was 28 and won his first Emmy. After Taxi, Ken was the showrunner of Cheers until leaving the series to create and run The Tracey Ullman Show with James L. Brooks, which earned Ken another Emmy. Ken created 7 network pilots, 5 of which became prime time series. He ran several award-winning series, earning him 11 Emmy nominations, 2 Emmys, 9 Writers Guild Award nominations, and 1 Writers Guild Award.