Slideshow gallery widget presenting one picture for every post containing images with link to the post owning this picture
Site Slideshow looks for pictures in all articles and pages, fetches one of them as representative of the post and gathered it into a slideshow widget. Site Slideshow is highly customizible. Klicking on the slide leads you to the post it stems from. Site Slideshow version 2 is much more general than version 1. It finds not only images from the standard gallery but also from any image-Tag and from the New Generation Gallery if it is represented by the shortcode [nggallery id=...]. Now you can also use Slideshow Gallery plugin concurrently.