Al Roker, Today's perennially jolly meteorologist, reveals that there are moments when even

he can lose his sense of humor. "I don't mind signing autographs," he tells TV Guide Online, "but when it gets in the way of being a dad, well, I wonder why people seem to forget I have a private life."

Case in point: Roker — who has two girls from two separate marriages — was recently at Miami International Airport when the unthinkable happened. "My two-and-a-half-year-old, Leila [with third wife, ABC correspondent Deborah Roberts], had a load in her pants," he remembers. "There was no place to change her in the bathroom, so I was trying to do it on a chair in a very crowded terminal waiting room. This woman came up and asked to take a picture with me. I said, 'Ma'am, can you just give me a moment while I finish changing this diaper?' She kind of huffed, 'Well, you seem so much nicer on TV.' I'm like, 'I'm halfway through a poopy diaper here. Please, work with me.'"

Potty emergencies aside, Roker admits it's sometimes easier to predict the weather than it is being a dad — but he loves both. "I really feel strongly about being a father," he says, "because it's been so gratifying." In his popular book, Don't Make Me Stop This Car (now out in paperback), Roker is both funny and emotional as he chronicles the challenges and joys of raising a family.

"I feel badly for fathers who just have boys," he says. "There's not much you can do with a boy — they're not into fashion; it's mostly pants and T-shirts. But I've discovered there's so many neat places to buy clothes for girls.

"Unfortunately," he adds, "I can't outfit my older daughter, Courtney, anymore because she's 14 and doesn't want to admit that her unhip, uncool father could pick out something that she'd like. But with Leila, I really get into the clothes-buying thing. I've discovered the 'awwww' factor. You pick up a little dress and you go, 'Awwww, look at that, it's so cute.' I just love to pick out her clothes."