By Jonathan McNamaraHeaded out to Coldplay tonight? Before you drive out to Jobing.com arena, arm yourself with some Coldplay criticism courtesy of our sister paper OC Weekly. OC Weekly Music Editor Albert Ching says:"What might surprise the Coldplay haters is that, in concert, the band actually kind of rocks. Hits like 'The Scientist' and recent single 'Lost!' have given them a not-entirely-unfair reputation of being rather mellow. While the slow melancholy of those songs is (wisely) retained