Heard from Steve, an old SE acquaintance, yesterday about the Blackberry thing. He tells the story about walking into the office of a mid-level Wall Street executive for a meeting in early December. The exec places his Black Berry on the desk and says "you have five minutes to convince me to listen for twenty-five more minutes - otherwise I'll leave the room and you can just present to my team".
Steve took it as a challenge, stopped his rep from still opening with a form of corporate overview, and got the exec's attention. He feels the whole email/attention disorder thing can be used to your advantage if you are brief and to the point. I wholeheartedly agree, and believe this is an example of the law of unintended consequences.