Simon Baker of Energized Work has just published a white paper entitled "No Bull" detailing his thoughts on the last 12 years of Agile software development. If you don't know Simon, he (and co-founder Gus Power) won the 2009 Gordon Pask award for contributions to Agile Practice. No one I've met comes close wrt thought leadership or actually getting this stuff working. Two soundbites I particularly liked...
"We can't solve problems using the same kind of thinking that created them" - Albert Einstein
"Developers are users of the code" - i.e. make the time and effort to keep the code base pleasing. I can think of a few developers who would benefit from remembering this.
You can download "No Bull" here.