Here is small collection of blog-posts, articles and case-studies on Agile and Enterprise Resource Planning implementations.
The post Can Agile Practices Prevent ERP Disaster sums up different sources on the topic and Agile practices in large system integration projects introduces a series of posts all dealing with agile and ERP.
MSDynamicsworld.com has a post titled How to Substitute Agile ERP Implementation for the Waterfall Approach which is spot on, when it comes strong link between the waterfall model and ERP-implementations.
InfoQ has a whole subsite dedicated to agile processes and Jesper Boeg's introduction to Kanban "Priming Kanban" can be downloaded for free.
