Comedic legend Dick Van Dyke celebrates his 100th birthday today, recognized for a nearly eight-decade career that includes iconic roles in “The Dick Van Dyke Show” and “Mary Poppins.” A new documentary, “Dick Van Dyke: 100th Celebration,” is being screened nationwide in his honor. Van Dyke has garnered numerous accolades, including four Primetime Emmys, a Tony, and a Grammy, and he remains active, recently winning a Daytime Emmy. He attributes his longevity to his wife, Arlene Silver, and continues to inspire generations of fans.