It's powerful, easy on the eyes, and comes pre-configured with some killer apps and add-on modules. The free version includes a slick blog and a page creator.
We use the commercial version, and it's paid for itself over and over. The two apps we use most often are the Item/Inventory Catalog and the Business Directory. But, honestly, we've put every app to use except, perhaps, for the Movie Database.
Our clients love how easy it is for them to manage their own content. And they get a sweet Submission app from the front end.
YooTheme has a pillar of Joomla society and they're actively developing the app.
YooTheme upgrades Zoo on what feels like a weekly basis - sometimes with major surprises. Recently, it added a much needed feature to send emails on Submissions and Comments. A Joomla 1.6 version is available and the upcoming Warp 6.0 and JQuery based tools are on their way (as of the time of this review).
How this does not have a 5 Star rating and a hundreds of glowing reviews is beyond me - my business depends on it.
What I can say is that this is a godsend for me. The ability to easily link to any Zoo category or item is crucial.
If you have any problems with the plugin. write in support of the address: firstname.lastname@example.org. We need you to answer and solve your problems.
Talk about responsive! He retroactively granted my wish list.
In case you missed it too, the instructions for adding driving directions are found on this post: http://tech.reumer.net/google-maps/demo-google-maps/marker-with-directions.html