Jonathan at nearly two months is just starting to practice his smiles And he's getting better at it, which is neat to see, Rob says.

Rob has found in Jonathan a mellow personality. "He's easier to console," than Rachel was at the same age, he says.

"He'll wake up a couple of times a night, but he's not bad about it. Rachel goes from sleep to screaming alarm without any transition.

"He'll wake up and kind of grunt around — 'Hey, Mom I'm hungry. Hey Dad, burp me.' He doesn't complain much.... He's been pretty cooperative."

When Rob talks about raising children, he talks about change — and he doesn't just mean diapers.

"It's something you should be ready for," he says. "There's no real way to do that I guess, but you should be ready to adapt, to change and adjust to what their needs are."

Rob believes, time management, sacrifice and planning are three strong elements of fatherhood.

"You can't just be completely spontaneous and jump out and go do whatever you feel like doing," Hughes says. "Keep in mind their schedules — eat, sleep, wake, play. You can't just think of yourself, there's three other people to take my attention."

Hughes sometimes finds himself in his role as father battling fairness with Rachel. When she makes a request that he knows he's going to refuse, but can't really explain the reason why, he just says no.

"That's not fair," always comes back at him.

He also learned that kids need to enjoy where they live. And that means a real home, one where mistakes are forgiven and learned from.

"Expect innocent accidents and don't be bothered by them," Rob says.

"Understand the real value of children when things get broken."

And what has becoming a father taught Rob about life in general?

"It teaches you to love in a different way, a deeper way than (Hollywood)," he says. "I mean, you expect to love them, but you don't imagine how much you really do.

"And you begin to realize that if you have a scary experience when they could've been hurt. You realize how much you've become attached. ... It's hard not to be overprotective."

Well that's ok, one wag of the finger won't be too much for the kids to handle.