It all started with a butt—a pork butt, that is. Carolina v. Duke, Pepsi v. Coke, and Tom v. Jerry are among the great rivalries of our time. Oh, and William T. Collins v. Jonathan Collins. What started as a steady, calming hobby for my systems-oriented father (he is a retired school principal) accelerated into Rodney King-levels of barbecue-fueled stardom in Waynesville, North Carolina. Spurred on by my family's affinity for all things meat—and…