In the Trash Humpers episode, Oancitizen declares that "our words are backed with nuclear weapons!" Of course, this is a quote from Civilization, but keep in mind what happened at the end of the Ken Park review.
Note Kyle averts having a Gag Censor during the "moonlight bathing" scene of Melancholia. Obviously the scene would be impossible to take seriously if it had still been covered that way, as he was taking it seriously.
At the end of the Melancholia review Ven sounds surprised that Kyle was watching that movie and asks him why; he explains it was for the show. But shouldn't he (Ven) already know that? He was seen earlier in the episode drawing the review's bumper art.