Depends on what part of Columbus you will be in. Couple of food places you need to go to: rubino's pizzeria in bexley. Schmidt's in German Village.
As far as a sports bar, Try Varsity Club. It supposedly ranks among the best in the country. (Never been myself, I left ohio before being of age) I do remember going to a place called BW3's near campus a few years ago. Really good wings.