Google AJAX Search API Playground
Wow, really neat example of what you can do with AJAX on a blog. All using the Google API. This is a great example of how to create an API, and then create some killer uses of your API, that just drive more traffic to you, which is in this case, Google.
I can barely get this blog to layout correctly (the MT templates aren't exactly simple to understand) but perhaps someday I can aspire to add this...
Link to Google AJAX Search API Playground
