[glhaynes]

Try command-clicking the Safari title bar sometime (when you're at a page with a URL that goes several levels deep) if you haven't before.

[Yaggo]

That's nice one! )Although not nearby as intuitive as <cmd/ctrl>+up.)

[glhaynes]

Not sure I agree — its standard for OS X documents to show their hierarchy when their title bar is command-clicked; cmd-up arrow is much less broadly used.

[hackmiester]

It's not only standard Mac OS X behavior, but Mac OS in general. I learned this trick in System 7, and I believe it was around for some time before then.