No 6. PhotoXhibit

This plugin allows you to setup widgets that can work with Flickr, Picasa, SmugMug and WordPress uploads. It also allows your visitors to set up their own photo galleries. It requires WordPress 2.1 or higher.

Go here to download.

No 5. Page Flip Image Gallery

Well, this plugin can display your images in a nice and quick way. And as the name suggests the images are displayed with the Page Flip effect, which can be a very nice touch to your blog.

Go here to download.