I have good news for all who asked about an off line version of the API design lecture I blogged about a few weeks ago. After literally a hundred emails and comments on the blog (thanks for pushing me to get this done), weeks of trying to get this setup, including the difficulty of finding a server to host a 500MB file, and -- ultimately getting some help from Scott Guthrie (thanks!), the zip file is finally available for download here. Enjoy!