About Joan Mary Cusack
Joan Mary Cusack (born October 11, 1962) is an American film, stage and television actress.
She has appeared in films, television and stage productions, receiving Academy Award nominations for Best Supporting Actress for her roles in the movies Working Girl and In & Out, as well as one Golden Globe and one Emmy Award nomination. One of her most notable television roles is as a cast member of the sketch comedy TV show Saturday Night Live in 1985–86.
She currently recurs on the Showtime hit drama/comedy Shameless, as Sheila Jackson.