Noth's undergraduate years were spent at Marlboro College in Vermont, where he built himself a log cabin. He also wrote poetry during this time. He earned an MFA from Yale School of Drama where he acted in some twenty-five plays and was a pupil of acting coach Sanford Meisner.
Noth made his film debut in 1988 in the low-budget Jakarta. He also had small parts in films such as Smithereens (1982) and Baby Boom (1987), and on TV series such as Hill Street Blues and Another World. In 1988, he filmed a pilot for the legal/police drama series Law & Order. In 1990, NBC began airing the show, which slowly gained recognition from critics and fans. Noth was fired from the show in 1995. Personality differences between Noth and Wolf settled down long enough to film a Logan-centric TV movie, Exiled: A Law & Order Movie (1998).
Noth scored a strong comeback in 1998 when he took on the role of Carrie Bradshaw's enigmatic on-again, off-again boyfriend "Mr. Big" on HBO's Sex and the City. Noth played the role for six years, during which he also appeared in a small role as Helen Hunt's husband in the hit film Cast Away (2000) and starred in a Broadway revival of The Best Man. In 2001, he played an FBI agent on a couple of episodes of Crossing Jordan, re-uniting him with Law & Order co-star Jill Hennessy. In 2005, Noth returned to the role of Mike Logan on Law & Order: Criminal Intent, joining the show in its fifth season following a guest appearance on a fourth-season episode. On this spin-off of the original Law & Order, Noth's detective team alternates episodes with Vincent D'Onofrio and Kathryn Erbe's characters.
Noth reprised the role of Big for the Sex and the City movie, released on May 30, 2008.
Noth was mentioned in the Family Guy episode Prick Up Your Ears (Family Guy) having his picture in the wallet of the show's character.
--Wikipedia
UNITED STATES