And the famous babies just keep on coming! In the last week, there's been:

• Brangelina. Maybe you heard about that one.
• Matt Damon and wife, Luciana.
• Gwen Stefani and rocker husband, Gavin Rossdale.

Feeling left out, Jack Black and his wife Tanya Haden welcomed their first child Saturday. The boy was born at Cedars-Sinai Medical Center in Los Angeles.

"It feels good," says Black. "I'm going to be the best daddy on the planet and I'm going to enter the best daddy competition. And I'm going to win it."

Others chimed in on the news.

"It's so exciting for him," Nacho Libre said. "He's worried about being a dad as far as the discipline aspect, but he'll definitely be the funnest dad on the planet. He's one of a kind. He has a very big heart - besides being as talented as he is - and cares about everyone."

Added costar Peter Stormare: "He's a very generous guy and I love him a lot. As a father he'll be so great. I'll be getting him a wresting figure for the little one!"