Charlie's
"wrap-around" tunic he wears in the final scenes of the episode
would later be used as the basis for Captain Kirk's "Captain's
Tunic" in the second season, albeit with a different colour.
Gene Roddenberry has a small cameo as
the voice of the Enterprise chef who informs Captain Kirk
over the intercom that there are real turkeys in the ovens.
In a
blooper, when Kirk and Charlie head to the bridge after Kirk speaks
with the chef, he arrives wearing his green tunic, despite of the
fact he entered the turbolift wearing his regular gold uniform.
Charlie is being
examined by Bones, but when they cut to a close-up, we see a
reflection of Charlie standing up staring at something off camera.
When the captain of the
Antares is trying to warn Kirk of Charlie's abilities, Kirk is in
the corridor talking to Charlie about not slapping girls on the
butt. He says, "I'm on my way to the bridge now," and gets on the
turbolift wearing his usual yellow shirt. When he arrives on the
bridge he is wearing the green tunic.
Gene Roddenberry's voice can be heard and only this
episode.
George
Takei has an un-credited cameo as Sulu who responds to Kirk's order
to have security report to the gymnasium.