At Interact08 I will (besides meetings and networking) focus my time on learning about Microsoft Online Services, Exchange Server 2007 and maybe a few OCS 2007 sessions.
At MVP Summit I guess most of my time will be spent on learning about OCS Wave 13/14 and I really look forward to this as this is my first MVP Summit.
Maybe we will meet at one of the events !? Feel free to leave a comment or contact me at e-mail/sip firstname.lastname@example.org .