What Youtube Channels Do You Follow?

Any personalities or shows you like a lot or think are underrated?
Here's my more recent interests:

Ideas Channel:
http://www.youtube.com/user/pbsideachannel



Cartooon Hangover:
http://www.youtube.com/user/CartoonHangover



NOVA Technologist channel:
http://www.youtube.com/user/NovaTechnologist?feature=g-user-u

 

http://www.youtube.com/user/InascTM?feature=mhee

I follow my own. Competitive Spy Tutorials.

 

A long time ago I used to follow sxephil, but I rarely use youtube anymore unless someone is linking me a video to watch.