http://www.google.com/macwidgets/index.html

Pretty cool.. I'm a mac user so I'm happy I can check my email in dashboard now..

P.S
Forgot to mention that this was released today along with the Google Pages at the Google Labs. Didn't get as much publicity..

http://labs.google.com/

I like the Search History one, even if it is a little slow. I'll have to use it more to get a better opinion, but it is promising.