Fox's The O.C. hit yet another Nielsen high Tuesday night. In its fourth outing, the prime-time sudser attracted 8.6 million viewers — up from 8 million the week before. As a result, Fox has ordered six additional scripts of the show. In other Tuesday ratings news, Bravo's Queer Eye for the Straight Guy notched a best-yet 3.1 million viewers, and ESPN's new football drama Playmakers scored 2.6 million viewers in its debut — an improvement over the network's typical prime-time audience.