Actor Ashton Kutcher is excited over becoming a first-time father to daughter Wyatt Isabelle.

He appeared on "Conan" show and shared about having his first child with actress Mila Kunis, reports people.com.

`It's unbelievable. It's the greatest thing on earth,` the 36-year-old said.

`We're really privileged that we have time and can afford to take time. So we don't have a nanny or a night nurse of any of the stuff. It's just the two of us," he added.

Kutcher said that fatherhood has already opened up a whole new perspective for him - including a newfound appreciation for his own parents.

`As soon as this child was born, I immediately wanted to call my parents and just apologise because I never knew how much they loved me,` he said.

He also shared how the celebrity couple came up with a unique name for their child.

According to the actor, the couple had already chosen another name, but then `when we were pregnant, the name didn't fit the energy we were feeling. One night, Mila was like, 'This is not the name'`.

`I had to get the creative juices going, so we were going to a Lakers game, and I just started listing off anything and everything I saw: 'sign, truck, wall, door ...' She (was) like, 'Shut up!'

"Then I was like, 'I've got a really dumb idea. What about Wyatt?' She goes, 'That's it'`.

As for her middle name?

`We gave her the name Isabelle after Mila's grandfather, who was Yitzhak. And so it has a little heritage,` said Kutcher.