There are two kinds of conversations about Johnny Carson. One kind is the one most of you are having. It is light and interesting, about showbiz, TV, popular culture. Then there is the other conversation many of us have been avoiding. -snip- A part of it (the conversation)landed on my desk with a little thump. It was a package, about the size of your palm, with a brown camel on it, two pyramids and three palm trees. "You can have them," said a friend who tossed them, casual in voice, though there was no missing the symbolism of it, his...