When I start IE8 for the first time I have to run the wizard which let you choose your default search provider, etc. Strange enough IE8 looks just like IE7 and while surfing the internet most of the websites I visit work the right way.
The text on some websites looks a bit strange (it looks like some text is bold). Another problem (hmm..not really a problem though) is logon form on my webmail. It looks a bit strange, but everything is working just fine.
If you want to try the beta version of Internet Explorer 8, just click here and find out yourself.