Yay. It's the fastest browser. Rendering-wise that is. What does that translate to? A couple of extra seconds in my day? Apple is great at hyping a single feature. That said, the Acid compliance is a bigger plus for me as a web developer. I'll back any browser that sides with compliance.
I agree with other posts on Firefox. Nothing compares from a plugin and dev point of view. And where I may lose milliseconds on rendering, I make that up far more in additional functionality. I run Chrome to search (great tabbing search field) and browse, Firefox to dev (unmatched dom and dev tools), IE to bank (come on banks, is it that hard to develop a cross-platform banking website?), Safari and IE 6 - 8 for testing.
Coverflow... pretty, but I'm sure I'd use it for a day and return to conventional navigation, as some posts have already said. As a proportion of my overall experience, I use my browser as a search and reference tool, I very rarely use my history, and when I need to, it's because I can't remember what the page was called or looked like. Facebook, twitter, RSS, flickr, gmail are increasingly happening outside of the browser these days.