For a basic, incredibly huge hamburger, you must go to Burgers Burger. When I was a kid, twenty years ago, I went to Mammoth and went there. It was great, and I remembered the huge burgers. I went back to Mammoth last summer, and sure enough, it was still there, good as ever. I also had decent meals at Whiskey Creek and a cajun restaraunt on the main road that I forgot the name, but it has a cartoon alligator theme inside, and it is in the same little mall as the visitors center (about 200 feet away).
California