Hi Ilja,
Hmmm.... Do I have a favorite adoption pattern...? Actually no, I don't. But I do have a favorite chapter - the one that ties all Agile practices to business values and process smells. I am personally of the mindset that methodologies are too large and coarse grained, and that any successful Agile adoption that lasts, must be adapted and molded to the context and environment of the teams and organizations using them.
To that end, I've written the book describing practices and not methods. My favorite chapter is also freely available for download at
InformIT.
Thanks for the question Ilja!