We like Communicator so much that we wrote a short and concise documentation for it. Feel free to grab your free copy here:

http://joomlaworks.googlecode.com/files/Documentation_CommunicatorComponent.doc

Enjoy!

There is a temporary solution to get ext.menu working with Joomfish:

in menu.menuloader.class.php, line 52, change the following:
global $mosConfig_lang, $mosConfig_mbf_content;

to:
// global $mosConfig_lang, $mosConfig_mbf_content;

The fix is from Daniel himself, and it should be working now...

I believe he will soon be posting the update of ext.menu to resolve this conflict.

Ext.menu is still the best menu enhancement system for Joomla!