Curious where Brothers & Sisters' Nora's reborn interest in writing and art is going? (C'mon, be nice. At least, I dunno, seven of you are.) Would you believe... the boudoir? Later this season, Peter Coyote ( Erin Brockovich, E.T.) will appear on several episodes of ABC's hit freshman serial as Mark August, a professor and potential romantic interest for the widow Walker. I foresee fisticuffs with Dr. Andy Brown.