I will repeat my prediction: I think Ted will be the next CEO.
See the linked article on Berkshire's most recent acquisition. Buffett sent Ted to Germany to negotiate.
http://www.bloomberg.com/news/articles/2015-02-23/buffett-tells-deputies-to-supervise-newest-berkshire-businesses
Hey Did anyone notice that one of Graham's holdings in the first letter from 1946 was Cities Service Preferred, which was the first stock Buffett ever purchased with his sister as per The Snowball. Pretty interesting coincidence.