I just tried out your Pop! widget. Just what I have been looking for.
I did run into one problem. I created a widget in my sidebar for the most popular posts and that worked fine. Then I created a second copy for most popular pages but that is not being populated. I did visit some pages after setting it up in order to create some data. The Popular Posts is giving more and more entries as readers visit posts but the Popular Pages is remaining blank with just the title "Popular Pages" showing.
Might I also suggest a third option "Pages & Posts" in the widget.