Starring: Alan Tudyk, Nathan Fillion, Adam Baldwin, Morena Baccarin, Gina Torres, Summer Glau, Jewel Staite
The Message - S1-E15
Visible crew/equipment: Tracey threatens the crew with a gun on the bridge when he hears that they're about to call the cops. He says that he'll blow a hole right through Wash if they do. There is a shot of Mal saying "You mailed your ugly business to Zoë and me, Tracey." As he says this, a crew member's hand can be seen above them (through Serenity's windshield on the left of the screen) grabbing one of the pieces of fallen ice.
Out of Gas - S1-E5
Trivia: Wash sets up a big red button for Mal to push to call back the shuttles if help arrives. He tells him "When your miracle gets here, just hit this button". After the show got cancelled, Alan Tudyk sent the button to Joss Whedon with the same message enclosed.
Question: In some scenes, why do the Serenity crew members speak Chinese?
Chosen answer: One of the premises of the show is that the two major Earth societies that survived, and ultimately merged, were the Chinese and Americans. As a result the common language includes much Chinese. Clothing, signage, and building designs also have a heavy Chinese influence.