Teaching GSP to Kick
When Georges St. Pierre asks you to teach him how to throw a kick, you are an elite level martial artist.
As mentioned previously, Joe Rogan was a successful taekwondo competitor, and had 3 amateur kickboxing fights. He has some knowledge he can pass on even to a guy as good as GSP.
Check out the video below of Joe Rogan teaching Georges St. Pierre how to throw a turning side kick: