Scott Guthrie pointed me at a link to the source code for the ASP.Net 2.0 providers including the Membership and Role Management providers. While I think the Profiles, Web Parts and Site Navigation providers are important and cool, I expect to do much more with the Membership provider. Expect to see some customizations in presentations I give in the future.
I think this is a great step and am not surprised to see Scott doing something this cool.
Check it out!