WP Lightbox 2 is awesome tool for adding responsive lightbox effect for images and also create lightbox for photo album/gallery on your WordPress blog
Lightbox is the perfect tool for viewing photos.
Huge-It Popup Colorbox is the most spellbinding plugin in WordPress that implement Lightbox-effect look of the images and videos
Easy lightbox wordpress is an awesome for your wordpress site's images & videos.
PopUp Video Generator is a plugin for WordPress that takes your FLV videos and adds an AWESOME popup feature to any text link or image link. This plug