Duncan's movie adaptation of the hit video game franchise, World of Warcraft, was not quite complete when the rock icon's health took a serious turn for the worse at the end of last year (15), but he was able to give his father a sneak peek months before its scheduled release date - and he's happy he did.

The filmmaker admits the loss of his dad during Warcraft's production tinged his filmmaking experience with sadness, and his emotions were given an extra nudge when his wife, photographer Rodene Ronquillo, discovered she was pregnant, three years after battling breast cancer.

"This has been an amazing opportunity and a crazy experience," Duncan told U.S. breakfast show Today. "My wife had cancer and we got through it, just before we started the movie. My dad passed away just as we were sort of reaching the end of the movie, and my first child is coming next month, so it's kind of a weird chapter for my life."

Duncan insists his family is doing well four months after Bowie's death, as they try to look to the future.

"Everyone's good," he said. "We're kind of moving with it and getting used to the new life we've got..."

Now the Moon director's only concern is when his first child will arrive, as his wife is due around the time of Warcraft's U.S. release on 10 June (16).

"When the baby comes we'll probably be on the red carpet!", he quipped.

Bowie lost his secret battle with cancer on 10 January (16), and Duncan marked the one-month anniversary of his death in February (16) by going public with his bittersweet baby news.

The tot would have been Bowie's first grandchild.