Jay Cross has a fun graphic in his post on Internet Time Blog: The shortest presentation on metrics you will ever hear
This is his "real world learning model" that, while someone tongue-in-cheek, but also has a lot of reality. I love that he includes the Shadow Organization, Grapevine and Rumor as parts of network of learning in an organization. It's all his copyright.
The presentation (slides with voiceover) referred to in the title gives me a much better flavor for Jay's perspective than I ever had before. Interesting combination of resources.