Not just in the South Bay. They are perennial winners at the annual bay area barista competition, where judging is done by other baristas, so they have a lot of cred as one of the best coffee places in California.
That being said, their new layout is a step down. Their slogan is "serious coffee, happy people" but now with the new assembly-line-style counter setup the people seem less happy.
Agree. I live in MountainView and still drive there for the coffee and ambiance.