There is a lot of excitement about the new Firefox. I've just downloaded it for both Mac and Windows, and I have to say that this is the best browser I have ever tried. The first thing I've noticed is that it is fast, in some instances pages that took seconds load almost immediately. The interface is cleaner and more modern-looking, and the Mac version has a Leopard skin that makes it more in line with the "Mac-look".
Firefox is quickly becoming the public face of open source. True, some other project are more importan, and some of the ocmpanies make more money, but the mainstream public is less likely to know about Apache, Red Hat and Novell.