CoverVid is a jQuery plugin to make your HTML5 video behave like a background cover image. It's so easy to use.
MaxImage 2.0 is a fullscreen background slideshow plugin that utilizes jQuery Cycle Plugin and all it’s transitions / options.
MaxImage 2.0 determines whether your browser can use CSS3′s background-size:cover. If it can, it uses it as to limit the amount of heavy lifting that jQuery has to do. That means the majority of your users will have a slim and smooth experience. That is so important with large image animations.