Has anyone noticed that Google Webmaster tools has a new tab "Top pages" under "Search Queries" ?
When clicked on that tab, it shows list of pages with impressions, clicks etc and average ranking for each URL. Pages that had more than 10 clicks have a "+" to the left of the URL and clicking on + opens up the entry showing all keywords that (I presume) were used to land on this page.
A number (but not all) of keywords shown in this list would also be underlined and when clicked on them, it shows x-reference to which other URLs this keyword ranked for
I think that information on which keywords drove impressions and clicks to a page is very interesting.