Animated Gifs and Clip Art
http://www.animationfactory.com/ - huge collection - must register first.
http://www.gifanimations.com/ - free collection of many animated gifs.
http://www.grafx-design.com/anim_tut.html - a step-by-step process in creating animated gifs
http://www.graphicsbydezign.com/ - a page full of free animation, clip art, backgrounds, and other graphics to be used on web pages.
http://www.pankpages.com/ - Site contains free downloadable graphics such as buttons and backgrounds, as well as tutorials which focus on Photoshop.
http://www.animationlibrary.com/a-l/ - This site offers an excellent selection of animated graphics in Gif format. A very robust resource!
http://www.gifs.net/gif/ - More the 15000 absolutely free Animations and animated gifs you can use on your website, emails, presentations or send as digital postcards.
http://www.animatedgif.net/ - This library of free animated gifs features over 40 categories and over 5000 graphic web images
http://www.gif.com/ - a huge collection of clip art and animated gifs.