Google just announced some awesome new features on the official Google Analytics blog:

http://analytics.blogspot.com/2008/10/more-enterprise-class-features-added-to.html

Most of the features are “being added to all accounts in the coming weeks”.
This includes advanced segmentation, custom reports, motion charts, and a new Account Management Dashboard.

They’re also going to eventually be releasing a data API, but if you really wanted to, you can already grab the Google Analytics data manually.

I’m impressed.

Avinash also has a great posting on the advanced segmentation function.