Esquire columnist Klosterman may remind listeners of a slacker holding forth at a tailgate party or over a game of beer pong. Klosterman has imbibed a lot of lowbrow culture in his young career and the tone of his sentences are a blend of jaded and amused, with a voice both nasal and deep. The strongest material in this uneven collection of pop culture essays are his celebrity profiles, in which Klosterman employs an offbeat narrative energy. Unfortunately, there is a jarring effect in these pieces when audio actors stand in for the interviewed celebrities such as Britney Spears, Val Kilmar, Oliver Stone and NBA star Steve Nash. The audiobook concludes with a short story, which Klosterman also narrates. Having listened to the author as himself for almost four hours, it's hard to accept him as the first-person narrator of his own fictional protagonist. In the end, Klosterman IV offers up a casual and relaxed style, but the narration is only as engaging as the material, which unfortunately becomes increasingly ragged as the collection unfolds. Simultaneous release with the Scribner hardcover (Reviews, May 29).