Jay's opeining night at 10 pm drew 18 million viewers, which is 3.5 times more than his previous show with averaging 5 million viewers. Letterman actually makes more money but his viewership was tailing Leno's before Jay finished his late night run. Now it looks like even if the average viewship drops by half in the long run, that is still twice as much as Leno used to get. He gave NBC its biggest overall audience in that time slot since the August 2008 Olympic Games. Industry insiders are hoping for a failure because Leno's success would mean more unscripted/talk show in the 10 pm slot....NBC has declined to publicly reveal its target ratings for the show, which costs roughly the same for five nights as does one night of a scripted drama.