Students all have a suggestion for just about every type of cuisine you could ask for, and there are virtually no complaints regarding the food in Boston. Restaurants off campus vary as widely as the city—offering pretty much everything. Going out to eat definitely seems to be a popular activity, and the prices tend to be pretty reasonable, especially around campus.
Clustered around the University, especially in the Allston/Brighton area, where many students live, there are tons of really cheap options with really good food such as Indian, vegetarian, Mexican, Brazilian, Italian, Chinese, Thai, and Vietnamese. Check out Chinatown and the North End for the best food in the city.