Tizionario

FlickrPhotogallery allows you to insert one (or more) image gallery (retrieved from Flickr) into your posts using a shortcode; 
You can also use the built-in widget to insert the gallery into the sidebars.
The plugin allows to retrieve: 
* Public images 
* User-specific images 
* Photoset-specific images 
* Group images
It is also possible to choose to show the image gallery as an unordered list or as a slideshow, in this case you can select the dimension of it.

FlickrPhotogallery

This plugin allows you to insert an image gallery retrieving images from Flickr.

templaza

tuyennv

This is a simple widget to display your Flickr latest photostream in widget area using Pretty Photo to open gallery images. 
You can get your Flickr ID at http://idgettr.com/. 
With its very beautiful widget interface, tabbed system, and powered by jQuery makes this plugin easier to customize. 
Just put your Flickr ID and your widget will be ready to lunch.
<h3>Features & Options</h3>
<ul>
<li>Beautiful widget interface</li>
<li>The type of images from user id.</li>
<li>Get the latest image.</li>
<li>Put your number images you want to display.</li>
<li>Optional image sizes.</li>
<li>PrettyPhoto for image thumb.</li>
<li>Free supports.</li>
</ul>
<h3>Arbitrary section</h3>
Note: If you don’t know your ID of Flickr you can go to http://idgettr.com/ get your ID.

TZ Flickr Widget

Plugin has get your Flickr photostream in a sidebar easily without authentication.

FlickrPhotogallery vs TZ Flickr Widget