Nathan Fillion in the Firefly 10th Anniversary Reunion Trailer (VIDEO)

It's been 10 years since Mal Reynolds took a flight on the Serenity, but we've been fortunate enough to have Nathan Fillion's wit and charm live on with Castle. 

But Firefly fans are thirsting for more, and they're going to get it. The Science Channel is shooting a one-hour special called Browncoasts Unite featuring footage from Comic-Con and interviews from the cast. 

Check out the new preview!