Gujarati, Konkan or Keralan in Bay area?
There's also Viva Goa and Sobbit Goa.
The higher-end South Bay places like Amber and Sakoon in Mountain View tend to have wide-ranging menus that include one or two Keralan or Konkan dishes.
DeeDee's in Santa Clara has different regional buffets on the weekends, including a Gujarati buffet the first weekend of the month. I've only tried the Kathiawadi buffet (4th weekend) and I thought it was good, but not outstanding - I'm not much of a buffet fan though.