I hate Keith Code.
He's an arrogant prick who doesn't answer questions to every-day people unless you're paying for his course, even if it's just normal conversation.
Go Freddie Spencer.
Of course, I say this assuming you have riding experience. If you don't, go take an MSF course (
http://www.msf-usa.org/) to get the basics down first, get comfortable with the controls and geometry of a motorcycle. Then go take a Spencer or other more advanced school like Spencer.