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.

With scheduling and the way projects come up, I take the first thing that interests me and that moves me. If it's going to be fun, if I'm going to have a good time, and I'm going to enjoy the people I'm with, then that's a good enough reason to do it.

What draws me to roles, I think, are moments - moments that define character, where so much more of the story is told in just a moment - a look, a line, a short scene, but something that speaks a volume, something that speaks to me.

I love doing 'Castle.' We pump out 24 episodes in 10 months, and we work long hours. We do lots and lots of takes, and everyone there is a talent machine. It is a taxing endeavour to say the least, but when you get into a groove, it doesn't matter if you're tired, it doesn't matter if you're sick. You can do it.

I am one of the lucky few who is successful in their career, and I'm really enjoying myself.

The trick is, when you grow up, find work that feels like play.

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.