Cool Software Alert. To my frequent detriment (because I am on Windows, but I wouldn't be surprised if this applies to Mac's too) I am always trying out new softtware, partially because of the gadget freak in me, partly to keep up with what's going on, and well, because often I find something useful.
I discovered MY IE2 and have been using it for a few weeks and I really like it. It's "simply" a new UI built around Internet Explorer with lots of handy little features. Most useful are: the tabbed interface (yeah, I know, it was invented somewhere else) and the notion of groups of tabs which you can save and recall with a single command (yeah, I know, ...) In a way the most important is what's not there, which is a new browser engine. Since it is IE under the skin all your usual web sites, warts and all, work in the usual way.
(p.s. why to my detriment? Because more often than one would like, installing software on a windows computer hoses something subtle and leaves the machine just a little less stable than before.)