I just discovered AJAXIAN.com. Awesome stuff, and a sweet podcast.
Here’s a recent entry:
DPolls is an Ajax incarnation of the polling genre. Interaction occurs in-page, without any need for refresh, which is perfect for encouraging people to actually vote. When you choose an option, you’ll see a progress indicator appear, followed by an animation showing the results growing to their rightful size. The animation seems a little gratuitous, but overall it’s a clean interface. It will be nice to see polls like this syndicated on other sites.
Right now, the most popular categories are “Computers” and “News & Politics” :-).