Anyone see good API tutorials on the web?

[kevin.hall]

OK, I know this may not be the perfect group for this question, but I
am trying to reach C/C++ developers to ask this question:

Have you ever seen a well-designed API tutorial (not an API reference
like MSDN) on the web that doesn't look like a book (i.e. using some
browser technologies like hyperlinks, javascript, and maybe even things
like cookies and flash)?

I'm looking for examples, because I am tasked with creating a web-based
tutorial for my company's API,.

Thanks for the help!

- Kevin