Cielo is the restuarant inside the Ventana Inn - http://www.ventanainn.com/dining.asp.  Excellent food, great salads, and a greatsetting with a view of the coastline.

Sierra Mar is inside the Post Ranch Inn and offers some of the most drop dead views that you will ever see in any restuarant in the world.  The food is excellent, with a pri fix menu and an extensive wine list and friendly staff.  The restuarant feels small and intimate - definitely worth a visit.

Nepenthe http://www.nepenthebigsur.com is another area restuarant with an incredible setting/views.  Has a full service restuarant, a cafe below, along with a nice gift shop.