Command-Click on Safari Title Bar!

I just noticed that you can command click on the title bar of a Safari window, and if you're visiting a page in the form:

http://www.something.com/something1/something2/index.html

then it will pop up with the following:
http://www.something.com/something1/something2/index.html
http://www.something.com/something1/something2/
http://www.something.com/something1/
http://www.something.com/

Pretty cool!