Nigel Robinson, I have learned since joining LJ, got his start in publishing with a Tolkien Quiz Book in which enterprise he was aided and abetted by fredbassett. He went on to edit the Doctor Who book range. His wikipedia page peters out in the late 1990s though I believe Fred has managed to track him down since.
The novelty for me, as a child, was having a DW book regardless of content! I suspect I wouldn't be able to get as many answers right though, but I have a new weird not quite six degrees of separation.
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I felt similarly when Fred first told me she had co-written a book with him.