"Everything I know about life, I learned from The Andy Griffith Show," says Joey Fann, author of The Way Back to Mayberry and founder of BarneyFife.com. Millions would agree. Many factors contribute to the continued worldwide success of the television classic that made a smalltown sheriff, his son Opie, Aunt Bea, and a comedic deputy famous. Fans know the most important element of this popularity is the program's emphasis on basic moral principles; almost every episode provides a lesson, a good example, or helpful word