Indeed. Do yourself a favor and don't watch any of the videos of him on youtube. That razor sharp wit combined with spontaneous humor will make you really mad at cancer.
Also: Do yourself a favor and (dont? er do?) read/listen to his brother's books! Particularly The Phoney Victory. He writes polemics as good as Christopher. Truly a yin to the yang. I like the way they argue, although I don't necessarily agree with everything they argue.