Saw the movie first and liked it (I have the DVD somewhere). Got the book not long after and pretty much liked it, but then, I became a fan of Barker pretty quickly. And of late there is the "Cabal Cut" of the film (with restored footage) making the rounds.

If you can find it, there's The Nightbreed Chronicles, a companion book to the film with photos of the assorted members of the 'Breed, with little biographies written for them by Barker.