I was going to be a High School teacher. I was studying at the University of Alberta in Edmonton, up in Canada. I was also acting in a wonderfully supportive theatre community in Edmonton. There's a lot of support for theatre there. So, I was having a great time, but I didn't consider acting as a serious career initially, because even the most successful actors that I know in Edmonton are not super successful. Acting over there is just not a success-oriented career.

MEN WALK ON THE MOON. To me, this speaks of a time when America wasn't just about the almighty buck. The Russians had put up Sputnik, and the U.S. would not be outdone. I admire that about the American spirit. There's only one spot in history for the first ever of anything.

Castle is a guy living in a fantasy world. He's in his imagination, writing these stories of murder.

I'm constantly pitching one episode where we see life through Castle's eyes. I think Castle's just a little off as far as his perception goes. A very, very clever man, but I want to see the world as Castle sees it - kind of a rose-colored glasses, all the women find him irresistible, all the guys find him super cool and do whatever he says.

My first Comic-Con was when I first met Joss Whedon: He introduced me to that world and I'd never been to a convention before that. He and a bunch of the 'Buffy' and 'Angel' writers were all going down in a big van and he invited me along.

I love hiking in the hills not far from my house. I'm invested in my hikes. Sometimes kids go up there and spray-paint over the signs; I've found a biodegradable paint cleaner, and I'll scrub the signs so they're nice and clean.

Castle isn't really affected emotionally by murder. He's thrilled about, 'Oh, my God, I wonder how this happened?'