Christina Pickles (born February 17, 1935) is an English movie, stage, and television actress, best known for her long-running role of Nurse Helen Rosenthal in the hospital drama St. Elsewhere, for which she was nominated for four Emmy Awards. Pickles is also known as for playing Ross Geller's mother (alongside Elliott Gould) in the hit comedy sitcom Friends. She was born in Yorkshire, England. She is currently not married.