The baking business is booming — spawning reality shows with crazy cakes and even crazier personalities. The shows are one part sugar, one part flour, and all WOW! Take Buddy Valastro of the show “Cake Boss”on TLC, who’s Betty Crocker meets the Sopranos. The show goes inside Carlo’s Bakery in Hoboken, N.J., that Valastro runs with his mother, sisters, and other members of his Italian family …