とりあえず、見つけたものをメモメモ
Backstretch
a simple jQuery plugin that allows you to add a dynamically-resized background image to any page
-> View Demo (ページの中程に Demos があります。)
bgStretcher 2
bgStretcher jQuery Plugin Allows to Add Background Image to Page and Proportionally Resize it to Fill Entire Window Area.
背景でスライドショーもできるとのこと。
-> View Demo
Supersized
Supersized is a fullscreen background slideshow built using the jQuery library.
背景をタイマーで切り替えるスライダーにもできるみたい。
-> View Demo
jQuery Anystretch
Anystretch is a jQuery plugin that allows you to add a dynamically-resized background image to any page or block level element. The image will stretch to fit the page/element, and will automatically resize as the window size changes.
responsive 対応
-> View Demo