Legendary actor, singer and entertainer Dick Van Dyke was born on Dec. 13, 1925, and so this December marks his big 96th birthday. While many know him best for his iconic work in movies like “Mary Poppins,” “Bye Bye Birdie” and “Chitty Chitty Bang Bang” or perhaps his classic mystery series “Diagnosis: Murder,” to others he will always be Rob Petrie — the affable lead character of “The Dick Van Dyke Show.”