Firefly did a movie to wrap things up.
The Big Bang Theory Season 6, Episode 21
He begged the Fox network
not to cancel Firefly.
The Big Bang Theory Season 5, Episode 21
♪ I'd be Firefly, Buffy and
Avengers without Joss Whedon ♪
The Big Bang Theory Season 7, Episode 6
He owns Fox
and they cancelled Firefly.
The Big Bang Theory Season 3, Episode 15
Kind of like when
Firefly was cancelled.
The Big Bang Theory Season 7, Episode 17