I went the last two years, but am going to try to go to TechEd instead this year. Someone else at my department is going, so I'll get the videos. What track you going on (SCOM, SCCM, VMM, etc) or just a little of everything?
I do software packaging, osd, and deployment so I'll focus on AppV, MedV, MDT, and SCCM. I definitely want to check out Service Manager and some VMM as well. I can see a lot of potential with VMM for testing and automation of deployment with Service Center.