I rewatched the entire keynote, and a few things stuck out to me.
1) There were only a handful of visible screens in the audience. Looked like less than 10 laptops in the whole place. Today, when you watch one of these keynotes, nearly everyone in the audience has a screen, and most of them are tablets like the iPad or touchscreen smart phones like the iPhone. Incredible how far we've come in such a short time.
2) Eric Schmidt cannot present to save his life. I still have no idea what he actually was trying to say on stage, there. I still have no idea why he (and the Yahoo Chief) were even invited to talk on stage.
3) First of all, who even remembers Cingular these days? I forgot all about them until I saw it on the original iPhone screen. That must have been AT&T's best acquisition in their company's history, getting them that multi-year exclusivity contract with Apple originally negotiated by Cingular. I wonder, though, if Apple was really better off having gone that route, as it left Verizon as a means for competitors to gain a foothold as well in the market.