I remember entering the Cheese Factory for the first time. It was like entering a surreal 50's diner with the flair of a David Lynch movie (in a good way). The food is all vegetarian and excellent. They have an old fashioned soda fountain counter, although I've never sat at it. They also have an old jukebox that is free and plays old 45's. Think 50's! We had three different people wait on us and each was very pleasant. They even gave us desert for free, a delicious fudge brownie with ice cream.
I have tried their spanikopita and had an excellent curry dish. They also have great home made soups. There are different specials so the menu is always evolving. For the Dells area, it is definitely more culturally diverse in terms of food. Give it a chance even if you are not a vegetarian, you won't be disappointed. By the way, I am not a vegetarian!