A fantastic 3:30 video case study from the Commonwealth Bank of Australia has just been released outlining their Microsoft Lync 2010 experience for Instant Messaging, Presence, Audio, Video, and Web Conferencing.
A couple of stand out stats and points CommBank mention in the video:
Check it out here at this friendly URL: http://www.microsoft.com/casestudies/Microsoft-Lync-Server/Commonwealth-Bank-of-Australia/CBA-deployed-Microsoft-Lync-Server-2010-and-experienced-fastest-take-up-of-any-product-they-ve-ever-deployed-across-the-business-with-60-adoption-rate-within-24-hours/4000009901