Save as archive for example, which creates a MIME formatted version of a web page in a single .mht file.
Most of all though, I like the drag and drop URLs. Click on a title bar URL, drag it to an edit field, and IE creates a link using the title of the source page.
Every other browser, as best I can recall, simply displays the URL. (I just verified that Firefox 3 just copies the URL.)
Today, on a whim, I tried the drag and drop operation into a Blogger "compose" box. Here's an example of what I got: Gordon's Tech: iTunes library: recreate, move and more.
So Safari has adopted IE's behavior.
Did it always do that? When did this change?
Great improvement. Now if Firefox could only learn this trick ...