Bryan Lunduke - Bryan Lunduke is a former Software Developer, former Software Tester, Vice President, former Linux marketing guy, former writer for Network World, former openSUSE Board Member, and a long forum Linux discussion host on YouTube.
The Linux Experiment - Making the Linux desktop accessible: no techno lingo, no command line voodoo, no super technical content.
Blender guru - Free and commercial tutorials
Egee - Informative and entertaining videos about Open Source Software, Gaming, and other loosely related things.
Smarter Every Day - Smarter Every Day is a channel run by Destin, who is a University of Alabama engineer who provides in-depth analysis videos of various scientific and engineering marvels of the world around us.
DistroTube - DistroTube channel primarily produces content showcasing the latest releases of Linux distros, their desktop environments, and well as their apps.