Gickr.com lets you upload a series of pictures and turn them into a quick flicking slide show. I uploaded just two to try out the site.
Here is how the site describes itself:
"Gikr.com lets you instantly create Animated GIF online, free....Just upload pictures or grab them from Flickr. Create funny flashy slideshows with you and your friends, cartoons, previews, banners, etc. Post them anywhere you can post pictures."
Have you used the site? Here is my quick 2-photo animated gif.