Update October 25, 2007: THE NEW (AND LAST) SEASON IS HERE!
Since I'm getting pummeled with searches for it – Scrubs starts up again Thursday, the 25th of October, 2007. They're billing it as the last season, and the writers all seem to confirm that in interviews, but you know, you just never know. Stranger things have happened. Will they eventually make it over to ABC? Who knows.
(Forget what I said about Sept 26, I have no idea where I got that. I could have sworn that in the NBC Preview they spoke of this being the week to start up all the new shows, but the official NBC site now has it listed at Oct 25.) Check out the quote file!.