I was watching The Dick Van Dyke Show during its initial run, and loved it. I didn’t see the first season or so, and caught up with them through innumerable reruns. The show was great not only because of van Dyke himself, but because of superb writing that sidestepped cliches and often seemed years ahead of its time.
Van Dyke reprise his Broadway role in Bye Bye Birdie, but he was very annoyed that they shifted the emphasis (and rewrote the script!) to newcomer Ann Margaret. Van Dyke and the rest of the cast deserve appreciation for their work.
Of course, he’s famous for appearing with Julie Andrews in Mary Poppins, and his work was superb in that. He deserves to be remembered for more than his awful accent (which he blamed on instruction from J. Pat O’Malley)
He appeared opposite Shirley MacLaine and an impressive cast in the forgettable What a Way to Go! and with James Garner Elke Summer and Angie Dickinson in the equally forgettable The Art of Love. (I think it was this appearance with Garner that persuaded Mad magazine to cast the two of them in their movie parody The Son of Mighty Joe Kong.)
After the show finished, van Dyke appeared in a number of other movies, often made by Disney. Most of these were not terribly memorable:
Fitzwilly (With Barbara Feldon and a lot of actors from TV sitcoms)
Never a Dull Moment (with Edward G. Robinson and Slim Pickens!!)
Lieutenant Robin Crusoe, U.S.N. (with Nancy Kwan. This one is definitely non-PC)
But he was also in the amazing Cold Turkey, made by Bud Yorkin and Norman Lear before they made All in the Family. Besides van Dyke, it has a young Bo Newhart and features the last movie role of Edward Everett Horton. A superb and much-overlooked dark comedy)
He appeared in a one-off TV special with Mary Tyler Moore that probably launched her star career in The Mary Tyler Moore Show.
He tried The New Dick Van Dyke Show, but it flopped. He made a serious movie about an alcoholic priest, The Runner Stumbles
I didn’t see much of him after that. I never watched his Mystery show, and caught him occasionally in things like Night at the Museum. But I never watched much of the later stuff he did.