ALL ABOUT THE BENJAMIN METAL SLUDGE A TO Z: With Hollywood yesteryear promoter and scenester Desi Benjamin    HOLLYWOOD, California — Once a key figure in the vibrant Post-Poison era on the Sunset Strip, Desi Benjamin is back. The former club promoter and A & R executive is promoting his new documentary called “Scenesters: Music, Mayham and Melrose Ave., 1985-1990.” “We were looking for a new sound and a new look. Bored with what we[…]