Mel Gibson is a 43-year-old going on 20. The actor who won the Academy Award for best director for Braveheart jokes that his wife has seven children, their six, and him - 'the eldest child'. Preparing to send his actual eldest child, 18-year-old Nell, to college, Gibson is also awaiting the birth in a few months of a new child with wife Robyn. 'I didn't see it coming. It's a surprise, but it's a pleasant one,' Gibson told New York's Daily News. 'It certainly will keep me occupied. The other kids are fascinated by the whole procedure. They're asking every conceivable question, if you'll pardon the pun.' The movie star with a reputation among his peers for constantly playing jokes will soon star in Payback, the upcoming remake of the 1967 Lee Marvin film Point Blank.