Since, its release on Sep. 15th, Internet Explorer 9 Beta has a pretty overwhelming initial reaction. "In first two days, over 2 million people worldwide downloaded IE9 Beta. By comparison, when Internet Explorer 8 Beta launched in August 2008, we had 1.3 million downloads over the first five days.
We've seen 9 million visits and over 26 million page views to the Beauty of the Web site since its release last week, and our developer-focused IE Test Drive Site has had 4 million page views since last Wednesday," informs Microsoft.
You must check this Internet Explorer 9 (IE9) Beta Videos post.