Rachel Griffiths is most known for her brilliant character of Sarah Walker on Brothers And Sisters. It’s one the most liked appearances of her acting career. Ever since she has started to portray this role, she has been known as Rachel Griffiths among the TV viewers. Though the lady has portrayed innumerous roles, the character of Sarah Walker is, no doubt, distinct and great. She has herself liked this role very much and says that her appearance on Brothers And Sisters is just unforgettable. Various other characters of Brothers And Sisters are seen helping her to carry out the plot requirements on Brothers And Sisters.