In 2012, he wrote, directed and starred in his second film, Liberal Arts, which premiered at the 2012 Sundance Film Festival. In 2014, Radnor portrayed Isaac in the Broadway play Disgraced, which earned a Tony Award for Best Play nomination. He then starred as Dr. Jedediah Foster on the PBS American Civil War drama series Mercy Street and as Lou Mazzuchelli in the musical series Rise.\n', '
Radnor was born in Columbus, Ohio, the son of Carol Radnor (née Hirsch), a high school guidance counselor, and Alan Radnor, a medical malpractice lawyer. Radnor has two sisters, Melanie Radnor and Joanna Radnor Vilensky. He grew up in Bexley, Ohio, a suburb surrounded by Columbus. Radnor attended Orthodox Jewish day schools (including the Columbus Torah Academy) and was raised in Conservative Judaism. Radnor went to Bexley High School, and later Kenyon College, where his school\'s theater department presented him with the Paul Newman Award and during which he spent a semester (Spring 1995) training at the National Theater Institute at the Eugene O\'Neill Theater Center in Waterford, Connecticut. He graduated from Kenyon with a Bachelor of Arts in drama in 1996. Radnor received his Master of Fine Arts degree in acting from New York University\'s Graduate Acting Program at the Tisch School of the Arts in 1999. Radnor participated in an Israel experience program in Tzfat with Livnot U\'Lehibanot in 1997.\n', '
Radnor was cast as the lead in The WB series Off Centre. However, the role was re-cast with Eddie Kaye Thomas before the first episode aired. In 2002, he made his Broadway debut in the stage version of The Graduate, succeeding Jason Biggs, opposite Kathleen Turner and Alicia Silverstone. In 2004, Radnor starred in The Paris Letter alongside his future How I Met Your Mother co-star, Neil Patrick Harris. From 2005 to 2014, Radnor starred in How I Met Your Mother, his biggest role to date.\n', '