Other helpful sites:
Video Sites:
http://wmug.co.uk/p/videos.aspx
http://www.deploymentresearch.com/Videos.aspx
Helpful Blogs:
http://www.deploymentresearch.com/Research.aspx
http://blogs.technet.com/b/deploymentguys/
http://blogs.technet.com/b/mniehaus/
http://blogs.technet.com/b/heyscriptingguy/
http://deployment.xtremeconsulting.com/
http://deploydepot.net/
Forums:
MDT http://social.technet.microsoft.com/Forums/en-US/home?forum=mdt
SCCM http://social.technet.microsoft.com/Forums/systemcenter/en-US/home?category=configurationmanager
Downloads:
MDT http://www.microsoft.com/en-us/download/details.aspx?id=25175
ADK http://www.microsoft.com/en-us/download/details.aspx?id=30652
SCCM http://www.microsoft.com/en-us/server-cloud/system-center/configuration-manager-2012-trial.aspx
InTune http://www.microsoft.com/en-us/windows/windowsintune/try.aspx
Server http://technet.microsoft.com/en-us/evalcenter/hh670538.aspx
Ill make this a running list as I run across other notables. Please let me know if you have any you feel deserve a spot on the list.
/Brian G