I'm an early-to-bedder myself, and there's no way I could function at 9:00 p.m. Personally, I'd like to the see the third debate scheduled for 9:00 a.m. (probably before Kerry's even -- you know those idle rich!).
Reminder that the third debate is here in glorious Arizona where it will be 9pm east coast, but only 6pm local. Depending on when President Bush arrives, he could have a day or two to adjust to the time change and so the debate will be "earlier".