Little Ceasar's has the $5 pizza that you can swing in and pick up.
My brother usually picks this up when he swings into town.
I think it's their hot and ready promotion. For $5 a pizza you can feed a crowd pretty cheaply.
I think you should call ahead though because if you need several they won't have them ready for you.
They taste fine and fill you up--just not super fancy or anything.