Feed2JS offers the ability to display RSS feed items on your own website, and lets you customize the output in many ways. The Feed2JS server also serves as a feed cache, so that if you add a feed to one of your web pages, the feed itself won't be hit every time the page is loaded (that is rude to the feed host, and can place quite a load on the server providing the feed). And it goes one step better: the code, and instructions, for hosting your *own* Feed2JS server are freely available.
Big thanks to Alan Levine for bring this to life and making it available; and thanks to Modevia Web Services for hosting the site for him.