Career

Per her official website, Martin has been acting professionally since she was 15 years old. She has been a founding member of several successful theatrical companies in New York City and Los Angeles. She has adapted the screenplays of several theatrical plays and served as associate producer of several TNT productions including the theatrically released film Gettysburg.

As a character actress some of her best-known roles include a policewoman in 48 Hrs., Mrs. Meredith in Real Genius, a dying burn victim in Nip/Tuck, Janice in Barfly, and Mac's mom in It's Always Sunny in Philadelphia. She has appeared in movies such as Defenseless, China Moon, Speed, Napoleon Dynamite, and Hot Tamale. She was featured in the popular film Marley & Me as the woman who sold Marley as "Clearance Puppy".

Martin is also well known for her recurring role on the HBO series Big Love. Her character, Selma Green, is unique: the possibly transgender sister of polygamous cult leader Roman Grant and the senior wife of his rival polygamous cult leader Hollis Green. The character has sparked much discussion on fan forums due to her masculine gender presentation and expression, and unusual relationship with her husband (who refers to Green as "Brother Selma").

[ Source: Wikipedia ]