Holey Crackers...so divine

Ever wonder why Ritz, Cheez-Its and graham crackers have holes in them?  Because the dough is composed of flour, water and other ingredients, the baking process causes the dough to rise and form air pockets.  If holes were not present, the trapped air would cause breaking, uneven cooking and cracker explosions.

But the real question is, why is there a hole in my donut and why does it cost $1.10 to buy a dozen donut holes?