For 2 months ago ,I found Full Screen Image Gallery plugin .It's a full screen image gallery that automatically scales the image with kept aspect ratio to fill the browser background. It comes packaged with a flickr search engine, thumbnails, captions, and with a preloader. It basically loads image links one by one and replaces it with a full screen image gallery and it scales the image using CSS only (with some JS for IE6).
you can take a look on Demo

Some features

• Flickr search using jQuery and JSON
• Full screen with kept ratio using CSS only
• A png raster to even out up-scaled jpegs
• Thumbnails with loader indicator and a nice hover effect that shows a bigger thumb (or description)
• A preloader loads the large images one by one for super-fast viewing
• Fetches the biggest image from flickr using their API
• Caption that can be turned on or off
• Navigate by clicking on either half of the image, or use the thumbnails.

This plugin is still under protection of copyright laws . Personally ,I can decode and give you the script of this gallery , offer you a Blogger template base on this gallery . But it's not fair . I think we should give the author some respect for his work and wait until he offer it for free .
You can go to this page to know more about this script