The feed readers just keep on coming. There are two worth mentioning. Orangoo is a new, web-based feed-reader that shows a fair amount of that AJAX goodness. It’s actually pretty good, though you can’t import by OPML (not yet at least).
On the client side, there’s Curio Studio’s GreatNews for the Windows platform. This looks like the younger brother of FeedDemon, with newspapers, Bloglines syncing, and such. It’s not as feature-rich as FeedDemon, but it looks like a competent start.