I'm the biggest geek of all. Adventure, fantasy, comic books - I can't get enough.

I don't spend a lot of time online. My mother's really good at picking out if she sees a really great review, and she'll forward it to me. She's like my little Internet filter. It's always nice to see something going up; if I want to find something on Nathan Fillion, I do know where to look, but I've got a nice little delivery system in my mom.

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've had a long line of failed television programs, pilots that were never picked up, series that didn't go very long. I've learned that there's really nothing you can do. If it's not in my control, I try not to worry about it.

You have a dramatic portion of your television program and you treat it dramatically, and then you have a comedic portion of your program, and you treat it differently. Why do you change who are between the two pieces? You're the same person. Just go.

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

My brain is like a hard drive. Once you start adding new information, you start cutting off old information.