I did not have the possibility to visit eighter MMS or TechED North America this year but fortunately Microsoft makes all the sessions available for download. The problem is that it takes a lot of time to download the ones I want. So I tried to find a better way to do it and someone has written a script 
In the links below you will find the two scripts.
Links
http://blog.scomfaq.ch/2012/04/21/mms-2012-download-sessions-offline-viewing/
http://blog.scomfaq.ch/2012/06/13/teched-2012-orlando-download-sessions-offline-viewing/