Rav Berg is the founder and head of the Kabbalah Center, and there are many people who love him and have come close to Kabbalah solely owing to his classes. Even those who have not heard him in his lectures still benefit from him if they are participating in the Kabbalah Centre's activities, as it is Rav Berg who together with his wife, Karen Berg, founded and run the Center.
In fact, whatever your taste in lecture or teacher, there are sure to be opportunities for a match at the Kabbalah Center, as there are many teachers of all different backgrounds and styles. Something which is also unique is being able to benefit from the lectures of women on Kabbalah, and Karen Berg is one of the lecturers.