For such a small island, Galveston boasts a number of wonderful places to eat, if you know where to find them. Many are small, unpretentious and very good.
Prices are inexpensive for hungry and harried medical students in the neighborhood.
This little Cajun cafe caters to dock workers and features wonderful catfish beignets and shrimp gumbo with andouille sausage. They may be the best this side of New Orleans. They're also inexpensive. It's off the beaten tourist track and a little hard to find, but the hearty Tex-Mex staples are well worth the effort. Try the huevos rancheros for breakfast and chili rellenos or chicken mole for lunch.