I tried my hand at writing, I tried to write out a little script - and it's not too bad. Mostly, though, it let me understand how incredibly difficult that job is. I can't even imagine doing it on a weekly basis for a series in any way. That's tough. I think I'll try to leave that to smarter people than me.

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'm comfortable only when there's a mutual attraction. That's what anyone wants. If I find out she's not attracted to me, it brings down my level of attraction to her. If I'm interested and find out she's not, I tend to cool off.

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.

Karaoke is something that's near and dear and very close to my heart. I was a karaoke host when I was working my way through university. I was a full-time student and karaoke was my night job.

No one wants to see a person on TV who's super-ultra-cool. That's Superman, that's a thing of the past. Heroes are now flawed, and have terrible tempers, you know? They're real people.

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.