One of my more fun clients, Heidi Miller, recently travelled to Colorado to give a seminar on the benefits of blogging and podcasting (aka "social media") for marketers. I got to be in on the "final polish" portion of her preparations, and it was a joy to see her fine-tuning and testing and changing slides. Definitely a good example of Kaizen; she churns like nobody's business. The talk covered not only the why and how but also gave some pretty solid suggestions for equipment and methodology.
She's posted her recorded talk here; I highly recommend it for people who are unsure of whether or not a podcast or blog would be right for them.