As we all know, Nathan Fillion who plays Richard Castle also played the great Malcom Reynolds, Captain of the Serenity (Firefly class ship).
There have been references to Firefly in several episodes of Castle. Being a fan of both shows and also being a bit bored at the moment and not wanting to wade through pages of topics and threads to see if this has been done before...
My memory isn't that great but I wanted to compile a list of episodes that contained Firefly references, just for fun...
The three that pop to mind immediately are:
Season 2 Episode 6 "Vamipre Weekend" Castle dresses up in this old Firefly uniform for Halloween and Alexis makes a reference as to the last time Castle wore that costume for Halloween, which is a reference to the last time Nathan Fillion wore that costume in the movie Serenity.
Season 2 Episode 18 "Boom!" After Castle shoots the gun out of the hand of the serial killer, Beckett comments on how it was a nice shot and Castle responds "I was aiming for his head." This same line is uttered byJayne Cobb played by Adam Baldwin in a Firefly episode whose title escapes me at the moment.
Season 3 Episode 9 "Close Encounters of the Murderous Kind" When Castle and Beckett enter the warehouse and encounter the two Chinese workers there, Castle starts talking to them in Chinese to get them tosay where the Chinese spy went. AfterwardsBeckett comments on Castle knowing how to speak Chinese and Castle makes reference that he learnedit aseveral years ago, another reference toNathan Fillion'sFirefly dayswhere Mandarin Chinese was the second dominant language.
Are there any others?