The second night of The Jay Leno show averaged 10.74 million viewers, according to Nielsen overnights. That was down from a final figure of 18.42 million for the show's opener on Monday -- but it was still far ahead of the competition. which included CBS's Big Brother , which has been enjoying its biggest season to date. Against Leno it drew 7.9 million viewers, while on ABC, a repeat of Barbara Walters's January interview with Patrick Swayze delivered 6.1 million. More worrisome for the producers of scripted television was the fact that the second night's ratings for Leno represented a 19-percent improvement over the season debut a year earlier of NBC's stalwart Law And Order SVU . Nevertheless, analysts cautioned that the curiosity factor is still at play and that Katie Couric also drew big audiences just after she switched from NBC to CBS, only to see her ratings quickly erode.