Parakoos

This wordpress plugin allows visitors to browse posts or pages by their images, displayed randomly on an infinitely scrollable Image Wall. The images link back to the post or page on which they are attached.
Images are powerful. They catch our attention like nothing else. You probably use them in your blog posts to anchor the fickle attention span of today’s readers. Display all these great images on a nice looking page, and your visitors will browse for a while, captivated. Hopefully, one image will stand out for whatever reason and compel the visitor to click it to find out more. And just like that, some old blog post you thought buried by the sands of time has gotten another view, thanks to your Image Wall.
You can see the plugin in action on my own <a href="http://www.themodernnomad.com/image-wall/#utm_campaign=Image_Wall&utm_source=wordpress&utm_medium=website&utm_content=description" rel="nofollow ugc">Image Wall</a> and the full plugin documentation on the <a href="http://www.themodernnomad.com/image-wall-plugin/#utm_campaign=Image_Wall&utm_source=wordpress&utm_medium=website&utm_content=description" rel="nofollow ugc">Image Wall Plugin page</a>.

Image Wall

Browse posts/pages by their images, displayed randomly on an infinitely scrollable page. The images link back to where they are attached.

pekastel

Lets you pick a Creative Commons picture from Flickr and use it anywhere you want on your WordPress installation. The plugin will maintain attribution to the original Flickr author to keep peace with the CC Attribution License.
This plugin makes use of the newest WordPress 3.4 feature that allows to embed html in image captions, and also is backward compatible with older version of wordpress as well.
Features:
<ol>
<li>Search photos from flickr with creative commons license by tag (since version 1.2 you can search by any type of license)</li>
<li>Preview image results.</li>
<li>Define the order of the search results.</li>
<li>Automatically add image caption that links back to the original flickr owner.</li>
<li>Lets you use the standard features provided by WordPress for image editing:
<ul>
<li>Image alignment.</li>
<li>Cropping.</li>
<li>Rotating.</li>
<li>Flipping.</li>
<li>Resizing.</li>
</ul>
</li>
</ol>

Flickr – Pick a Picture

Lets you pick a Creative Commons picture from Flickr and use it anywhere you want on your WordPress installation.

Image Wall vs Flickr – Pick a Picture