Identity2.0
If you haven't seen it already then please watch the Identity2.0 presentation Dick Hardt gave at ETech2006 Identity 2.0 Presentation
InfoCards
Interested in knowing more about Infocards and Cardspace then there is a selection of videos on Channel9.
InfoCards Explained is a good starting point.
Story of Digital Identity
STODID is a collection of podcasts done since 2006 and contain a lot of useful and interesting information on the history and future of digital identity.
You can also find a lot of interesting podcasts on Technometria
Comparing OpenID and SAML
Want to know the difference between SAML and OpenID then the White Paper by John Hodges is a great place to start.
Blogs and RSS Feed Aggregation
Planet Identity is an aggregated feed of various Identity Blogs.
Vikram's Blog - [yes2privacy.wordpress.com/ Yes To Privacy] yes2privacy.wordpress.com/
