The actor beloved for his performances in such films as "Mary Poppins," "Chitty Chitty Bang Bang" and the classic TV sitcom "The Dick Van Dyke Show," is being celebrated in a new two-hour tribute special, "Dick Van Dyke: 98 Years of Magic" (airing on CBS December 21 and streaming on Paramount+). Correspondent Tracy Smith sits down with the ever-youthful Van Dyke to talk about his illustrative career, winning new generations of fans, and building a body of work that has yet to be finished.