As more and more websites are now enhancing their login systems to include buttons for identity providers such as Google, Yahoo, Facebook, Twitter, Microsoft, etc.
Google has recently released a sample site that shows how a website can migrate users away from password based logins, to identity provider. This sample site incorporates many of the ideas of Internet Identity community, as well as feedback from numerous websites. The following video provides highlights of some elements of the user experience.
The sample site is at openidsamplestore.com, but it's recommended you read this FAQ which describes the site and has links to additional videos of some of the features.