There are a lot of cool things about Google's browser. The first for me is the ability to drag a tag out of the browser to create a new window. It has "incognito" mode for private browsing and according to the feature page each tab is it's own thread so crashes are isolated.
Google's browser reminds me of everything I liked about FireFox 1.0. Simple, clean, and with a single purpose. Google even takes this single purpose to another level by removing the typical FILE toolbar, there isn't one. The top is the tab and you can optionally turn on the bookmark toolbar in the options panel.
So far all of the websites I worry about look as expected. And it is fast, much faster than IE7 or FF2/3 from what I can tell.