In the San Francisco East Bay Area (Oakland/Berkeley/Walnut Creek), the absolute BEST deep-dish pizza is from Zachary's. I've been to many states and tried many pizza places, and this is just hands-down the best (sorry Chicago).
For Burgers, there is Barney's burgers and The Counter isn't bad either.
Many good Mexican places, but the best was "La Fiesta" in Berkeley, but after 52 years, the owner finally retired...
Great steak places, but Ruth's Chris is my favorite.
You can find good food from just about anywhere in the world. Great place to live.