Instructions: Take this list of authors, remove those whose efforts do not grace your shelves, and bring the list up to fifteen by adding some more that do. An asterisk indicates newly added authors.
William Shakespeare
JK Rowling
Douglas Adams
Hunter S. Thompson*
Andrew Vachss*
Douglas Coupland*
Greg Rucka*
Dave Eggers*
David Foster Wallace*
Oscar Wilde*
David Sedaris*
Bill Zehme*
James Morrow*
Michael Chabon*
Vladimir Nabokov*
This list only counts prose works (well, except for Will S.), which is why I didn't include any comics or screenplays.