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Dick Van Dyke 's waving "Bye, Bye Birdie" to double-digit era ... because he's officially a centenarian!

The iconic actor turned 100 years old Saturday ... and we've put together pictures of the star from his more than 75 years in the public eye. Getty

For many people, his whimsical role as Bert in the 1964 Disney hit "Mary Poppins" encouraged others to fly their kites and discover the meaning of the word "Supercalifragilisticexpialidocious."

DVD dominated the '60s ... grabbing parts in "Bye Bye Birdie" and "Chitty Chitty Bang Bang" ... while also starring in "The Dick Van Dyke" show, which ran for 158 episodes over the course of five seasons. Getty

Dick also flexed his drama muscles in later years ... playing Dr. Mark Sloan in the show "Diagno

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