Image and Video display

http://galleria.io/
very good image galery use it!!

http://ryrych.github.io/rlightbox2/
meida box to display images, videos etc..

http://tympanus.net/Tutorials/ThumbnailGridExpandingPreview/
you can use this to show thumbnails of other websites.

http://tympanus.net/Tutorials/BigVideoSlideshow/
Fullscreen Video Slideshow with BigVideo.js

http://tympanus.net/Development/AnimatedResponsiveImageGrid/index.html
Animated Responsive Image Grid

http://tympanus.net/Tutorials/3DHoverEffects/index.html
3D Thumbnail Hover Effects

http://tympanus.net/Tutorials/CSS3FullscreenSlideshow/index.html
CSS3 Fullscreen Slideshow

http://tympanus.net/Development/FullscreenImageBlurEffect/index2.html
Fullscreen Image Blur Effect with HTML5

http://tympanus.net/Tutorials/DraggableImageBoxesGrid/
DraggableImageBoxes with jquery

http://lokeshdhakar.com/projects/lightbox2/
Lightbox is a simple, unobtrusive script used to overlay images on top of the current page. It's a snap to setup and works on all modern browsers.