The 2012 Hugo statistics [PDF file] show award-winner Encyclopedia of SF (eds. Clute, Nicholls, Langford and Sleight) would not even have made the final ballot if the next closest contender in the Best Related Work category, Whedonistas by Lynne M. Thomas and Deborah Stanish, had received three more nominations. Wow.
[Hat tip to Dan Wells.]
Update 09/04/2012: Corrected post per comment by David Levine.