For all the prior Carnival of the Agilists selections, see here: http://www.agilealliance.org/show/1670
Enjoy. These are recommended.
This is not to say that I would agree with every word of every post, but “two heads are better than one” is an key idea in Agile. The team is wiser than any one individual. (Yes, I know there are exceptions, and a good team knows when to follow the leader.)