Tools not toys
I have not relly warmed up to the widgets, yet. I am not sure I lke the idea of switching between my "normal" apps and the widget apps - I find the separation of apps and widget apps quite arbitrarily. It simply has nothing to do with the way I work so I do not tend to use them.
I like the Wikipedia, leo.org and key reference widget for quickly looking up some information, because there is no need to start/navigate a browser. The rest is gimmicks to impress the legacy system users