The only thing I like about IE8 is the way it treats each tab as a separate process.  Everything just seems a little off.  Suggested Sites is worthless, Slices seem like RSS to me, and there are lots of sites that render incorrectly until I resize the window (C9 included).  Hopefully they're busting their butts to get it finished in time to release with Windows 7, because IE7 crashes at least once a day for me.