I told myself a while back, 'Love what you do, but don't fall in love with what you do.' That way you won't be brokenhearted if ever it gets canceled five episodes in - which has happened to me.

I like to say there's certain things you can't take back: One of them is 'I love you,' and one of them is bullets.

In all my characters, I try to find an iota of myself, and in Castle, I found a lot. He gets away with a lot, so that's fun.

I had a Ford F-250. It was a big ol' farm truck, but it wasn't a rig. That's about the biggest I've ever driven. That's what I drove back and forth to high school. I was a poor guy, and it was a truck that my uncle owned and let me drive because I had no money.

I tell you, 'Firefly'? Best job I ever had. Heartbroken when it was canceled, but had it not been canceled, I never would have gotten 'Serenity'. I think 'Serenity' is the most incredible thing I've ever been able to actually get my hands on and do. I can't even tell you how much love I have for that project.

Oh, boy. I'm still in touch with about 90 percent of my exes. They would describe me as being unlucky in love.