Comedy icon Dick Van Dyke celebrated his 100th birthday on Saturday, hitting the century mark some six decades after he sang and danced with Julie Andrews in “Mary Poppins” and starred in his self-titled sitcom.

As part of the celebration of Van Dyke's birthday this weekend, theaters around the country are showing a new documentary about his life, “Dick Van Dyke: 100th Celebration."

Van Dyke became one of the biggest actors of his era with “The Dick Van Dyke Show,” which ran from 1961-66 on CBS; appeared with Andrews as a chimney sweep with a Cockney accent in the 1964 Disney classic “Mary Poppins” and, in his 70s, played a physician-sleuth on “Diagnosis: Murder.”

Also a Broadway star, Van Dyke won a Tony Award for “Bye Bye Birdie” to go with a Grammy and four Primetime Emmys. In 1963, he starred in the film version of “Bye Bye Birdie.”

Just last year, he became the oldest winner of a Daytime Emmy, for a guest role on the soap “Days of Our Lives.”

In the 1970s, he found sobriety after battling alcoholism, and spoke out about it at a time when that was uncommon to do.

Now that he has hit triple digits, Van Dyke said he's gotten some perspective on how he used to play older characters.

He recently imparted wisdom about reaching the century mark in his book, “100 Rules for Living to 100: An Optimist’s Guide to a Happy Life.” He credited his wife, 54-year-old makeup artist and producer Arlene Silver, with keeping him young.

Van Dyke was born in West Plains, Missouri, in 1925, and grew up “the class clown” in Danville, Illinois, while admiring and imitating the silent film comedians.