Kirk Douglas celebrates 100th birthday

Kirk Douglas in 2013 (Reuters)
Kirk Douglas in 2013 (Reuters)

Acclaimed American actor Kirk Douglas has celebrated his 100th birthday.

Douglas, father of Oscar-winning actor Michael Douglas, is best known for his starring roles in classic films such as Spartacus and 20,000 Leagues Under the Sea.

Reaching the landmark age, Douglas told Variety magazine he feels "lonely".

"I am now 100 years old. I read about Hollywood, and I don't know the people. Where is Burt [Lancaster]? Where is Laurence Olivier? They're all gone. I miss them. I feel lonely," he said.

Speaking of his extensive career, Douglas said he was moved to acting after first being applauded by classmates in kindergarten while reciting a poem.

"Something happened when I heard applause. I loved it. I still do," Douglas has previously said.

Douglas' daughter-in-law, actress Catherine Zeta-Jones, shared a touching video for the Hollywood great in a post on Instagram, wishing him a happy birthday.

Set to David Bowie's 'Young Americans', the video includes photos from across Douglas' lengthy career as well as his family life.

Kirk Douglas last appeared on screen in 2008.

Newshub.