From Countdown last night:

OLBERMANN: As promised, here he is, the man of the hour, the hour being now 10:00 Eastern, Jay Leno. Congratulations. We can‘t get rid of you, huh?
JAY LENO, TALK SHOW HOST: Thank you, the governor of Illinois is the man of the hour but I‘m thrilled just of the a chance to make a bid on the Senate seat. It was not accepted but I thought 50 grand was more than enough to be senator from Illinois.
OLBERMANN: Apparently that would have worked with the governor if somebody hadn‘t stopped him in time.
LENO: And I loved his Josh Brolin from “Harvey Milk” hair. Did you see that? What was that hair style? What did this guy just step out after a 1980 yearbook. You see that?
OLBERMANN: We know where he will be stepping into in the immediate future. This brings up a serious point here. This will be a five-night-a-week, obviously largely topical program in the middle of primetime or the end of primetime on a broadcast network. Is 21st century America ready for this? A lot of political humor and the stuff you‘ve been doing in late night now moved to primetime?
LENO: We are assuming that NBC still has a primetime, OK? There‘s your error right there. That‘s sort of the problem. You know, it‘s a different model now, this is not something that would have worked 10 years ago or even five or six years ago. And right now people go—you know, it‘s interesting, when you talk to young people they don‘t know channel 2 from channel 4 from channel 148 to channel 307. They just watch what they watch and that‘s what we‘re counting on. Look we don‘t expect to beat shows like “CSI” that go against us, but those shows are only on 22 weeks, we‘re on 46 to 48 weeks so we can do topical stuff on a nightly basis. Plus people go to bed earlier now. 10:30 is like 11:30 used to be. I speak to young people now, young couples that have kids or children and maybe they‘re not driving their car as much, they‘re taking public transportation and getting up earlier so it‘s a chance to do this stuff at a different time.
OLBERMANN: Do you think—Our concern here is obviously the political element of things. And that‘s obviously one of your loves, let alone one of your areas of expertise, do you expect that that – would there be more of a spotlight on that stuff at 10:00 at night than there would be at 11:30 or will there not be that much of a difference?
LENO: I think you get more eyes watching. I think what will happen is lots of people, what happens at 11:30. They tune in. They watch the monologue. They watch the comedy. If they don‘t like what you have coming up, whether a stunt or a guest, they turn it off and they go to bed.
That‘s—when you work in late-night television you‘re always fighting sleep. The worst thing for us is 12:00 to 12:06 on all the networks because you have that long six minute commercial. And people just go “all right, enough already” and they turn off the TV and they go to bed. This is a chance to kind of move it up a little bit and see what happens. And it‘s cheap to do.