FishEye Menu is a GPL Joomla module from TemplatePlazza.com
This module will displays your menu in a nice zooming animation effect (based on jquery and Interface elements script)  that fully configurable from backend parameter..
This module also equipped with a png fix hack for IE, so you can place a transparant png image for your menu and your image will display correctly on IE.

You can see the demo from here or here and download the module as free from download page 

Changelog for 1.1 :

Fixed Minor IE7 Issue