It is really very diversified varieties of boards covered by one person. Raspberry-Pi and chipkit module combination will be really helpful stuff for armature electronics developers, otherwise if one know embedded system design he can directly program Raspberry-Pi. But overall it is very good video explanation of wide variety of boards.
As always Caleb I am amazed by the way you seemingly effortlessly jump between platforms. But it occurs to me that where I would have a few different chips and transistors on my workbench, guys like you now have a few different boards. Getting an MCU project going from scratch would be a huge undertaking these days, but the boards do most of the donkey work for you. The effort is now in the programming and interfacing (which is where you excel). Very nice show.