Anton Yevtikhov wears a t-shirt with Joy Division's album "Unknown Pleasures" (1979) cover art. Incidentally, album was released on June 15, director Mykola Yeriomin's birthday.
"The Point of Review" segment was fully filmed in one take. As Yaroslav Kozak largely improvised his lines only one word was dubbed in post.
In "The Wave He Gave" segment, when The Tester asks The Seller on the price of "Something Special", the latter does not answer. If you look closely, he shows five fingers, implying on the price.
An unexplained situation of "Kannskiy: The Night Talker" fitness video scene was not scripted - it actually appeared in background.
Filming took four years and editing took seven months (February to August 2016).
Mykola Yeriomin: [multilinguality] Apart from main bulk of the episode being in either Russian or English (subtitled respectively with in-built subtitles), there are also small portions of Ukrainian, Turkish, Spanish, Hebrew and Latin scattered over the episode.
Mykola Yeriomin: [titles and credits] A lot of in-jokes ans stylistic gags in main titles, end credits and openings of shows-within-the-show. See Crazy Credits for details.
Mykola Yeriomin: [homeliness and cosiness, often long-awaited by characters] Evgeniy Kvasov, falling asleep in studio's comfortable chair and especially embracing when the show of his ends, meeting between Syutkin and Bergman in café, audience member of the "Insomnia" Night Club.
Mykola Yeriomin: [Askold Tutylopydirskiy] credited as a composer of "Favorite Song of Innokentiy Zibrov-Zadunayskiy" by Innokentiy Zibrov-Zadunayskiy
Mykola Yeriomin: [post-credits scene] a dialogue about filming of the episode and a shot of Dyadya Vasya (Uncle Vasya), accompanied by drill.