I am using IE8 RC1 now and the whole crash thing seems to have been resolved in this release. It renders pages a little differently but it has "compatibility" mode on it which does a pretty good job of making pages that render strangely return to the way IR7 rendered them.

Other than that I don't see any noticeable bugs like 7 had and I've been running it for about a week or so.

I also really like the new color coded tabbed browsing and the address bar now shows the exact domain one is looking at which should really help out less advanced web users to identify the actual domain they are visiting and should help prevent phishing quite a bit.