Sandy Martin

Sandy Martin is an American actress, playwright, director, and producer. She is best known for her roles in the film Napoleon Dynamite and the TV series Big Love, It's Always Sunny in Philadelphia, and Ray Donovan. Career Martin started her acting career at 15 years old; she is a founding member of several successful theatrical companies in New York City and Los Angeles. She adapted the screenplays of several theatrical plays, and served as associate producer of several TNT productions including the 1993 film Gettysburg. Martin's television roles include playing Mickey Donovan's sister-in-law Sandy Patrick in Ray Donovan, elderly nun Sister Laura Marie on Saving Grace, a policewoman in 48 Hrs., Mrs. Meredith in Real Genius, a dying burn victim in Nip/Tuck, Janice in Barfly, and Mrs. Mac in It's Always Sunny in Philadelphia. She appeared in the films Defenseless, China Moon, Speed, Napoleon Dynamite, Hot Tamale, and Marley & Me. Martin portrayed Grandma Dynamite in Napoleon Dynamite and in the animated TV adaptation of the film. In Marley & Me, Martin played the woman who sold Marley as "Clearance Puppy". Martin portrayed the mother of Sam Rockwell's character, Officer Dixon, in 2017's Three Billboards Outside Ebbing, Missouri.