I WEAR THE BLACK HAT. By Chuck Klosterman. Scribner. 224 pages. $25. Chuck Klosterman, the author of such influential works of pop anthropology as "Sex, Drugs, and Cocoa Puffs" and "Fargo Rock City," is the best kind of philosopher -- one who refuses to cop to being a deep thinker even as he's kicking in the doors of perception (and sometimes spraining his ankle in the process).