When I spoke with Nathan Fillion in 2010 for a site called Culture Mob, Castle was still early in its run and there was talk about a sequel to Dr. Horrible’s Sing-Along Blog. There is still occasional talk of a sequel, but Castle has just ended its run at ABC. I remember tossing out a few references to see what might engage Mr. Fillion, and was game. He talked about his love for the movie Monkey Shines, voiceover work, and weighed in on DC vs. Marvel. It was a short interview, but a very enjoyable one.