EXCLUSIVE: With the indomitable spirit of Spartacus himself, Kirk Douglas celebrated his 101st birthday with family and friends on Saturday. Douglas’ Oscar winning son Michael flew in from New York just to be with his dad on the special day, and then was flying right back to where his eldest son Cameron is about to make him a grandfather – and Kirk a great-grandfather – with the imminent arrival of a baby girl. Daughter-in-law Catherine Zeta-Jones couldn’t be at Douglas…