Comedian who often employs animation and instruments into his comedy acts. He created the Comedy Central show Important Things with Demetri Martin. In 2013 he acted in the film In a World... and in 2015, he began voicing the character Ice Bear on the Cartoon Network series We Bare Bears.
He attended New York University School of Law before dropping out to pursue comedy. He won the Perrier award with his show "If I...." at the 2003 Edinburgh Festival Fringe.
He played the role of Elliot Tiber in Taking Woodstock alongside Imelda Staunton.
He married his second wife, Rachael Beame, on June 1, 2012.
He appeared in the film Paper Heart with Michael Cera.