Earlier quoted context omitted.
I saw, couldn't find the name of the narrator I'm talking about the actual videos, not the intro one (narrated by Sal Khan and John Resig) e.g. this one http://www.khanacademy.org/cs/intro-to-drawing/848372201 Sounds Vi Hart to me...
They're narrated by Jessica Liu, more details here: http://ejohn.org/blog/introducing-khan-cs/
she sounds a lot like Vi, and this comment on this one, 5 seconds from the start helped my confusion...
http://www.khanacademy.org/cs/1-welcome-to-codecanvas/882454...