
And a funny Greek letter.
The Big Bang Theory Season 5, Episode 16

(ALL SHOUT IN GREEK)
The Big Bang Theory Season 4, Episode 21

TV, film, D&D, manga.
Greek, Roman, Norse gods...
The Big Bang Theory Season 1, Episode 6

Hmm. Greek food on pizza night.
The Big Bang Theory Season 4, Episode 21

is a Greek Syrtaki dance.
Money Heist Season 1, Episode 9