I like the concept of OpenID. I remember when Brad announced it, when it was still called Yadis. I remember because at the time I was cleaning up the code that Clix used for global authentication across all their properties, and that one shares a lot of ideas with Yadis/OpenID.
In recent weeks we've seen AOL, Microsoft (63 Million OpenID potential users just there, plus all the Yahoo! logins), Verisign, BitFrost (of the OLPC project), any XMPP account, and even Mozzila Foundation is thinking about OpenID inside Firefox3, and this makes me believe that OpenID is now in his teen years.
Brad passed the torch to Simon Wilson and he has made an excellent screencast showing him using his OpenID to access some sites.
We live in interesting times...