Luckily the IE8.0 team has put in workaround to allow website developers time to fix their code or view historic sites. With IE8.0 now being rolled out via windows update more and more people will bump into this.

The magic button located in the navigation bar just to the right of the address bar (next to the refresh button) and looks like a ripped document.

This will be useful for me as I can now test websites with 2 different flavours of IE without having to drop into my VM.