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Doc, you reminded me that when I was a teenager I went to a couple of Sci-fi World-Cons. Surprising who you can sit down and chat with in the hotel coffee shop at 4:30am. Also pretty surprising the conversations you may have. Anyways, I guess I could add a couple of well-known authors to the list. Frank Herbert, Harlan Ellison (he was a pipe smoker and not very tall, his pipe only came up to mid-chest level on me), Bob Silverberg, and Isaac Asimov but only in passing. That was the year when Asimov and Ellison had their "F--- You!!" dialog across the ballroom during one of the discussion periods. Good times!