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Mather hails from New York City where he studied acting at NYU’s Tisch School of the Arts and The Shakespeare Lab at the Public Theatre. He spent fifteen years performing in many New York experimental venues, working with some of America’s most creative young playwrights such as Sarah Ruhl, Gina Gionfriddo, and Adam Bock. He is pleased to return to the Geffen where he was seen in By The Way, Meet Vera Stark and David Wiener’s Extraordinary Chambers. Mather has appeared in a wide variety of film and television roles. Some of his favorites are Kieran in Rachel Getting Married (Sony Classic), District Attorney Mike Powers in Reno: 911! (Comedy Central), and in the series Man Up for ABC. He will be appearing on the highly anticipated Showtime series Masters of Sex and he recently recurred on Showtime’s House of Lies. Mather will also reprise his lead role in the series Newsreaders for Adult Swim, which is a spin-off to the wildly popular series Children’s Hospital.