William Shakespeare once came back from the dead to ask for Neil Gaiman’s autograph.
In any given week, 7 of the top 10 books on the NYT Bestseller List are by pseudonyms of Neil Gaiman.
Hitler actually won World War II. Then Neil Gaiman wrote an alternate-history story in which the allies won, and reality was too intimidated to argue the point.
Most agents charge a 15% commission. Neil Gaiman’s agent pays him an extra 15% for the privilege of saying “I’m Neil Gaiman’s agent.”
See 20 Neil Gaiman Facts for more!
Neil Gaiman’s bookshelves:

One day I’ll have bookshelves like this too – but then what would I do if I wanted to move?