Philipp Lenssen of Google Blogoscoped has created GoogleModules.com, a directory of "modules" or widgets that you can add to your personalized Google.com/ig page.
Google already has a similar but much smaller directory.
Some of the modules are:
10x10 image of the hour
Other Google Searches
KidneyNotes and Enoch Choi of Medmusings are probably the biggest Del.icio.us fans among the medical bloggers and they may enjoy the new Del.icio.us widgets. The modules work as plug-ins to Google Personalized page.
Subscribe to the RSS feed for new modules.
There are more widgets available on widQ.com.
Image source: googlemodules.com