Howard Stern has temporarily set up shop in Los Angeles, and his crew is certainly taking full advantage of their time on the West Coast. During his interview with Jennifer Aniston, Stern called over one of his producers, 39-year-old J.D. Harmeyer, who’d agreed to try marijuana for the very first time in his life. Aniston, a Los Angeles native, was floored. “You’re going to smoke weed for the first time?” Aniston, incredulous, asked. “You really haven’t?