The program was actually written to match the video though, not the other way around.
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...
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...