Web site Gickr lets you create animated GIF images quickly and easily.All you need to do is enter a Flickr tag or username and check the boxes next to a few pictures. Then choose a speed and size and click next. That's it. You can also upload images to use.
It's very useful if you want to quickly embed a slideshow or animation without using Flash or PowerPoint.
It literally took me less than a minute create this animation:
Gif animations at Gickr.com