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02/27/2013 08:11 pm ET | Updated Feb 28, 2013

'Firefly' Revival: Nathan Fillion On The Chances Of A Reunion And The 'Dr. Horrible' Sequel

Joss Whedon's cult favorite "Firefly" may have only been on air for a brief period, but judging by how often Whedon and the show's cast still bring it up, hope for a revival is never far from fans' minds -- especially in the age of the Netflix rescue of "Arrested Development."

When The Huffington Post visited the "Castle" set for the celebration of the show's 100th episode (airing Monday, April 1 at 10 p.m. ET on ABC) we couldn't resist asking star Nathan Fillion about his thoughts on a potential "Firefly" revival, as well as what's on the horizon for his other collaboration with Whedon -- a "Dr. Horrible" sequel.

"We talk about it, we dream about it. I don't think you could find a cast member, a writer, a director, any of the crew who'd say, 'No, I'm out,'" Fillion admitted of "Firefly." "People are pretty busy right now, Alan [Tudyk] is always working, and obviously Joss is pretty busy. But that would be something that I would do again in a heartbeat. There's something about 'Firefly' -- it was my first love. So if you get a chance to go back to your very first love, you'll do it, right?"

Regarding "Firefly," Whedon recently told the Toronto Sun: "I'll never really accept [that it ended]. And I always, in the back of my head, think, 'What if I could get the old gang back together? ... It's something I would love to do."

The closest the team has gotten so far has been a 10th anniversary reunion panel at Comic-Con, as well as a Science channel special, and Fillion and "Firely alum" Gina Torres reuniting on "Castle" when the actress earned a guest-starring role.

The news was a little more positive for "Dr. Horrible," in which Fillion co-starred as the egotistical Captain Hammer opposite Neil Patrick Harris' titular villain. "We're talking about doing another one; there are plans to do another one; we've done everything but set a date and actually do it ... we haven't really done it," Fillion said. "But everybody's in. There's all these ideas flying around, there's plans -- there's, 'Oh, what if we did this?'; 'Oh, that'd be fun! And then after that we can ... '; 'And we did this last time so we'll do this this time ... ' There's those kinds of plans, but we don't have any dates or anything set yet."

Would you watch a "Firefly" revival? Do you think it will ever happen? Weigh in below!

Check back with The Huffington Post for more with Fillion and the rest of the "Castle" cast closer to the 100th episode on April 1.

"Castle" airs Mondays at 10 p.m. EST on ABC.

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