From PEOPLE Magazine Click to enlarge
DAVE GROHL

Life as a globe-trotting rocker helped the Foo Fighters lead singer prepare for the challenges of fatherhood. "I've been jet-lagged for 20 years, so sleep doesn't make any difference to me," says Grohl, 40, who welcomed daughter Violet into the world in April 2006. He and wife Jordyn, 32, are expecting another baby this spring.

JOEL MADDEN

The Good Charlotte singer, 30 (whose girlfriend Nicole Richie, 27, is expecting baby No. 2), thinks quality time with Harlow, 14 months, will pay off: "I have a feeling that when she starts talking, she's going to be a daddy's girl."

GAVIN ROSSDALE

When the former Bush frontman heads off on tour in April, he's taking a special guest: son Kingston, 2. "It's going to be fun!" Rossdale, 43 (also dad to Zuma, 7 months, with wife Gwen Stefani, 39), tells PEOPLE. "Just get him bunks so he won't fall out—that's the main thing."

MICK JAGGER

Despite his reputation as the ultimate rock star, Jagger, 65, considers his family—seven kids, ages 9 to 38—a priority. "I see my children very often," the Rolling Stones lead singer has said, "as often as I possibly can, and their education is very important."

SLASH

The guitar legend, 43, has said that settling down with wife Perla, 36, and sons London, 6 (a sports nut), and Cash, 4 (who's learning to play guitar), meant "getting rid of all the real hardcore stuff that I used to live on."