So I obviously don't need to tell you what Chrome is, even if it is a little over-hyped. I found this interesting thou Google Chrome Adoption Stats from BlogoWogo. It's plain to see that this could prove to be a key strategic move in the history of Google, especially when you consider the number of people now using all of Google's Javascript intensive online applications.
If you're bored, check out the Gmail performance difference between Chrome (or even Firefox) and Internet Explorer.