I do, I do!! I use the book cover widget and show the most recent books that I have added to my library. I customized the widget a bit. Since the books I have recently reviewed are usually the most recent I have added to my LibraryThing library I can always zip down to the widget and see what my last reviews were. But my widget is way down on my blog page...I would like to move to a three column template some day.
Nope, have not yet looked at all the new widgets but as soon as I have some time to dedicate to improving my page I will...I really like the new animated feature.