We mentioned already how The Wire is a linguist's delight for its grasp of Baltimore American English. Well, there's more : many untranslated sentences in various other languages. Here you go:

S02

μαλάκα [el]

S02E11 @ 12:55

лесбиянка. грязная пизда [ru]

S02E12 @55:17

spoczywaj w pokoju [pl]

?

puta... me voy a acordar de ti [es]

S05E09

Ανοίξτε το [el]