[m_mueller]

I've yet to see an exec with such concise outside communication, from technical details up to the big picture, as Steve Jobs. Interviews with him are a master class in communication skills.

[sumedh]

I guess Buffett would be another example though his talks are about finance and investments.

[i_have_an_idea]

Not at all, Buffet rambles a lot. It takes significantly more effort to understand the points he is making.

His writing style is quite good though and often very insightful.