Back some moons ago, I used to be part of IBM's services/consulting organization. Global Business Services (GBS) is the global consulting organizatoin within IBM. I started using Enterprise 2.0 software (mainly Lotus Connections) as a consultant for IBM.
It was (and still is) the best way to find knowledge and people when you need them. One of the things that got me hooked was all the integration points that were available. For example, I could access data directly from mail client, instant messaging client, word processor, etc. It didn't matter where I was, the data was always available to me, and in context.
Last week, GBS launched a new version of their Practitioner Portal, which integrates all aspects of social directly into their portal. That way, consultants who are already familiar with the existing portal, now have real-time access to intellectual capital created by IBMers worldwide. This is a great way to encourage adoption, in my opinion. Here's a video GBS put together to advertise their new portal.
(The video reminds me of Chuck for some reason). Enjoy