imagemenu, creates an image menu with the pages specified in the shortcode or template_tag
And of course, if you find this plugin useful (especially if it gets you out of a fix in a commercial setting), please feel free to leave feedback via the donate button on the plugin homepage. (I am grateful for those people who have already bought me a beer 🙂 )

ImageMenu

Create a menu using the featured image of a page.

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This is a menu that uses the images attached to the posts/pages galleries as items background. You can insert the menu wherever you want: into the content, in your theme files and as a widgets. Visit the <a href="http://web-argument.com/category/accordion-image-menu-2/" rel="nofollow ugc">plugin page</a> for demos and details.
Special Features:
<ul>
<li>Allows to combine pages and categories and apply order to them</li>
<li>Its integrated with the wordpress > 3.0 menus interface</li>
<li>The plugin uses the post feature image or the medium size image attached to post and pages</li>
<li>The menu uses the top image from the posts/pages gallery</li>
<li>You can use it to list recent posts</li>
<li>Multiple transition effects included (Elastic, Bounce, Sine, Pow, Quart, Back, Circ)</li>
<li>You can include ‘the title’ of the target pages</li>
<li>Allows to include multiple menus on your blog </li>
<li>The menu can be based on posts/pages ids</li>
<li>Compatible with: Chrome, Safari, Firefox and IE 7, 8, 9</li>
</ul>

Accordion Image Menu

Accordion Image Menu that allows to use the images attached to the posts and pages galleries as background.

ImageMenu vs Accordion Image Menu