Been using IE 8 Beta 2 since the day it was announced. Here are some of my interesting points that i like about IE 8 B2.
1. Colored tabs to identify if they are from the same link. when you right click on a link on a page and it opens in a new tab then both of them will have the same color. This helps you to identify the related pages so that you don’t close them by mistake.
2. In Private Browsing. this helps to view email and other pages that you don't want to leave cookies around. I wish that there could be a mode where you select In Private Browsing by default.
3. Web Slices. That is a cool feature where you can subscribe and then view without having to check back with the website daily.

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