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.

pezholio

This simple plugin allows users who use the visual editor to be able to display a Flickr slideshow for a user, set or group by simply placing the url in between [flickr][/flickr] tags.

Flickr Flash Slideshow

Flickr flash slideshow can display a standard Flickr Flash slideshow for a user, set or group inside an iFrame

FlickrPhotogallery vs Flickr Flash Slideshow