The Best Online Slideshow Creator : MagToo

MagToo, an image widget application and portal site that allows users to create slide and panorama shows and share them on Facebook, MySpace and other social networking sites as well as link them on Google Maps.

MagToo offers a quick and easy slide show building tool complete with styles, themes, skins and music that can be selected by the user to personalize their slide show. It also offers a unique magnifier tool for users to view close-ups of any image they upload.

You may also want to check this excellent guide by Kevin Purdy on how to turn normal looking photos into fantastic wide-angle landscapes.