First Fudruckers I went to was in Omaha..get to build your own burger as hight as you want. One in Oceanside not bad either. Farmers Boy , when up in Riverside county, make very tasty double burgers with giant size onion rings. IN-N-Out use to be good, though in my mind not the best. Ask about their secret menu...cool stuff on it.
Pizza, good pizza, is hard to find. Like the deep dish with extra peppers & sausage. Scilian style tops my list. Those chain places are really below par. Smaller joints tend to have the best real pizza.