CSS-Tricks Example

WebKit Image Wipes

Alernating, Automatic, Angled

Rollover, Straight

Smile
Sleep

Photos

http://www.flickr.com/photos/joiseyshowaa/2720195951/
http://www.flickr.com/photos/livenature/175872009/
http://www.flickr.com/photos/romainguy/230462559/