I mention this because over at the Well (I keep thinking how nice it would be if the NYT went out of business and all their bloggers continued on their own, or at some other site; especially Tara), there's a pointer over to an article by a pediatrician, about her own kids' bedtimes, and the Obama kids' bedtimes. If you are interested, you can pursue it yourself. I won't give them the traffic, altho I will note that the people who worry about their kids and themselves getting enough sleep are rarely the people who probably should be worried about their kids and themselves getting enough sleep.
I think kids and schedules are a piss poor combination. That said, for several months now T. has had a strikingly consistent bedtime and bedtime routine, even tho we've made no effort to create a routine and have on occasion actively thwarted it. And that bedtime is a _lot_ earlier than it used to be. Sadly, he gets up a lot earlier, too, which is a real bummer.
A.'s habits are still fairly flexible. She sleeps every few hours during the day, and she sleeps a good long stretch only partly waking up for snacks at night. I'm sure some day she'll disappoint me too, by developing a regularity I will find somewhat deplorable. My favorite personal schedule, adopted in college, and maintained until the kiddies started arriving, was sleeping from about 2 a.m. to 10 a.m. Alas, I haven't been able to sustain staying up that late for years, and the last few months I haven't been able to sleep in that late, either. Which just goes to show you that setting a 6 p.m. bedtime is kind of pointless.
All that aside, I _do_ believe that people need to get enough sleep. I even believe that there are times of day and night when sleep is more rewarding than others (trying to go down for a nap at 10 a.m. for me is really tough, but napping at 3 or 4 p.m. is really easy). I just don't think it should be taken quite as far as our culture persists in taking it.