Sorry, not going to answer this one. Seemed rhetorical anyway...but here's trying!
In addition to Khan Academy, here are a few other great online educational resources.
(URL list via Rachel Swaby of Wired)
ENGINEER GUY
http://www.engineerguy.com
CONNEXIONS
http://www.cnx.org
ITUNES U
www.apple.com/education/itunes-u
GOOGLE CODE UNIVERSITY
www.code.google.com/edu
MOMA’S MODERN TEACHERS
www.moma.org/modernteachers
PBS TEACHERS
www.pbs.org/teachers
YOUTUBE EDU
www.youtube.com/edu