I’ve stumbled on a treasure trove collection of popular Soviet-era as well as some modern cult movies with English translations/subtitles. Quotes from these have made it into everyday language, and memes form became a part of the popular mental set.
A great resource if you want to understand the subtleties of how an average modern Russian feels and thinks.
A wise learner of language will start not not with lame dobroye utro, pozhaluysta, kak proyti na Krasnuyu Ploschad kupit matreshkas and such but with words and phrases that are at the core of the culture. Warnings and prohibitions is what defines Russian mental set, and words and phrases to that effect permeate the language.