I also find that whenever I read Feynman or watch one of his lectures, it always seems as though the real subject is Feynman himself. In spite of his humble everyman from Brooklyn persona, he always seems intent on reminding you that he is smarter than you are. He always seems to know better than all the idiots out there. I find it very off-putting.
At the same time, I can respect his contributions to physics and his personal genius. He was also clever and quite charismatic. But I wouldn't give my children a copy of Surely you're joking...