Neil Gaiman is a British author. Most famous for TheSandman, his works also include prose, poetry, radio, TV and film.
Neil was a later part of the British invasion of DC which started with AlanMoore (Swamp Thing / Watch Men / Killing Joke), and later encompassed (amongst others) writers AlanGrant? (Batman), GrantMorrison (Animal Man / The Invisibles), GarthEnnis (Hellblazer / Preacher), JamieDelano? (Hellblazer), WarrenEllis? (Transmetropolitan), and artists SteveDillon, GlennFabry?, JohnRidgeway? etc etc etc.
He is a regular collaborator with DaveMcKean?, who illustrated all of TheSandman covers.
Other fine Gaiman stuff is
The Dreaming: http://www.holycow.com/dreaming/
Is my observation correct, that he seems to be PairAuthoring? at an unusually high rate?