Knotbumper is pretty much your everyday American diner, but with some coziness added to it. It seems to be a family-run business. We were very well received, the waitress was very attentive and corteous. The decor has this old west atmosphere, but not a forceful, ostentiously staged one. Food is OK, I had a tasty hamburger, but what I enjoyed most was that they have more than one variety of Sierra Nevada beer.