This image released by Universal Pictures shows Andy Samberg in a scene from "Popstar: Never Stop Never Stopping." (Glen Wilson/Universal Pictures via AP)

“Popstar: Never Stop Never Stopping,” the Lonely Island’s mockumentary styled after self-aggrandizing docs like Bieber’s “Never Say Never,” doesn’t often reach the kind of pitch that will shatter glass. It comes closest when its “Behind the Music” format dissolves and, before you know it, there’s (the film’s producer) Judd Apatow’s penis (definitely not in a box) smeared against a limousine window or Will Arnett’s recurring, cackling, beverage-wielding impression of TMZ’s Harvey Levin.