Gmail: Track Your Account Activity

For quite some time, google had been rolling out all not-so-fancy stuff thru google/gmail labs. (These can be found in 'settings' of your gmail account)

Now, here is something interesting !
http://gmailblog.blogspot.com/2008/07/remote-sign-out-and-info-to-help-you.html

You might have already noticed this 'Details' link at the bottom of gmail page.
A nice n fancy thing, that will also help you track password leaks !