Music Database
Goth, Industrial and Metal music database

All Music Guide
Very good database covering all types of music

All Movie Guide
Film database

Internet Movie Database
Another film database

Tim Burton
Fan site dedicated to the work of Tim Burton

David Cronenburg
Lots of stuff on David Cronenburg

FictionAlley 
Lots of excellent Harry Potter fanfics and slash

The Susan Cooper Home Page
Excellent fan site discussing the work of children's author Susan Cooper

Angela Carter
Information on novelist Angela Carter

Clive Barker
Author and artist Clive Barker's official homepage

Ray Bradbury
Very good fan page for author Ray Bradbury

The H.P. Lovecraft Archive
Information and resources on H.P. Lovecraft

Francis Bacon
Site dedicated to the work of artist Francis Bacon

H.R. Giger
H.R. Giger's official site

The Richard Dadd Page
Page dedicated to the work and life of Victorian artist Richard Dadd

Alan Garner
Unofficial page for author Alan Garner

Hieronymus Bosch
Page for Medieval artist Hieronymus Bosch