By Mike Miller
Updated December 10, 2016 11:40 AM
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Kirk Douglas is 100 years old today, and his famous daughter-in-law is celebrating the occasion with a sweet video montage of the actor’s life.

Catherine Zeta-Jones, who’s married to Douglas’s son Michael, posted the video to Instagram on Friday. The montage shows famous photographs of the Spartacus actor, as well as never-before-seen pictures and home movies from his private life.

“Happy birthday Kirk,” the video reads. “100 years old today. Love you Pappy.”

Set to David Bowie’s “Young Americans,” the video also shows adorable clips of the actor playing with his grandchildren, Dylan, 16, and Carys, 13. In one sequence, the grandchildren are seen going through Spartacus training, sparring with fake swords and dressed in ancient Roman costumes.

Born during the height of World War I to poor, illiterate Russian immigrants living in upstate New York, the legendary actor pulled himself out of poverty to become one of the most famous men in the world.

RELATED: As Kirk Douglas Celebrates 100, a Look Back at His Greatest Roles

“My parents came from Russia and my original name was Izzy Danielovitch,” Douglas told PEOPLE in 2015. Douglas began his acting career after serving in WWII, and went on to star in over 90 films, earning three Oscar nominations and an honorary lifetime achievement Academy Award in 1996.

Douglas still lives in Los Angeles with his second wife of 62 years, Anne Douglas, 97. The two are releasing a new memoir, Kirk and Anne: Letters of Love, Laughter, and a Lifetime in Hollywood, in May.