Bones, Season 6

Brennan:
They looked so happy.

Booth:
Shoot yeah. They had a baby!

Brennan:
Their whole lives have changed. You'd think they would be a little more apprehensive.

Booth:
Well, you know, having a baby. That's a good thing.

Brennan:
You really think that?

Booth:
Yeah, it's a great thing. Why? What? Oh, come on, Bones. Look, the baby is fine. He's healthy. They have a healthy baby, all right? They love each other. This is the happiest day of their lives, okay? What?

Brennan:
I'm -- I'm pregnant. You're the father. [She watches as Booth smiles, and smiles back]