nypost.com — Unemployed, perennially confrontational talking head Keith Olbermann aimlessly wandered around Central Park South earlier this week, seemingly looking for a friend or a purpose. Our spies snapped unflattering pictures of Olbermann decked out in a giant red pullover and clownishly baggy jeans as he strolled 59th Street near Seventh Avenue, smelling the roses - or, in this case, the horse manure, allergens and aromas from a nearby food cart.