If you are looking a very comprehensive listing of links with sub-categories then you should check out the fantasyguide link directory. It contains over 1,000 links broken down into separate pages and based on subject. Many many specialty subjects like Artists, writers, wikis, and pages devoted to individual tv shows and books or writers, or specific topics like dragons or unicorns. It is the most comprehensive science fiction and fantasy guide on the web. The Fantasy Guide Link Directory
The Knight Medieval Website
Site devoted to Medieval Knights with information about their history, their weapons, armor and code of chivalry. The Knight-Medieval
Castleficiton.com
Site about fantasy in books. Information and essays about fantasy and epic fantasy.
epic-fantasy.com
The Webs top site about the genre of epic fantasy from books to movies and stuff for writers.
Speculative Vision Science Fiction and Fantasy 
Science Fiction and Fantasy Brought Into Focus: art gallery, interactive Sci-fi and Fantasy stories, forums, Scifi search engine, writing resources, JAVA games ...
http://www.speculativevision.com/
Heroic Dreams Blog - All Things Medieval, A blog about a variety of medieval and fantasy Subjects.
DMOZ Open Directory Project
http://dmoz.org/Arts/Movies/Genres/Science_Fiction_and_Fantasy/If you are not familiar with the DMOZ directory you should check it out. It is an impartial directory on all subjects and each subject is edited by a volunteer human editor.
About.com: Fantasy / Sci-Fi Books
Offers original articles and features about fantasy and science-fiction books, plus annotated links to selected relevant Internet resources, compiled by a subject specialist, a subject-specific bulletin board, and details of related news and events. Authors featured include Iain M Banks, Terry Pratchett and JRR Tolkein.
http://scifi.about.com/
Storm The Castle.com - Interesting eclectic mix of fantasy materials including writing, free novels, free podcast and tutorials on how to make fantasy video games and fantasy dioramas and models.
SFF Net
The premier site for authors and readers discussing all varieties of genre literature; from science fiction, fantasy and horror to romance, mystery and ...
SFF Net is the world's premier site for genre fiction - science fiction, fantasy, horror, romance, mystery, and young adult fiction. SFF Net is a large, bustling online community of authors, publishers, editors, and - above all - readers.
Millions of individual fans visit SFF Net every month. At any given moment, hundreds or thousands of members are online, taking part in discussions, reading stories, sending email, or chatting.
http://www.sff.net/
Nice essay on Fantasy Films
http://www.filmsite.org/fantasyfilms.html
Forrest J Ackerman's Wide Webbed World
Visit Mr. Science Fiction's on-line Ackermuseum of sci-fi, fantasy and horror film treasures collected by the former editor of Famous Monsters of Filmland magazine, creator of Vampirella. If a big fan of those special effects movies from the past like Jason and the Argonauts then you have got to check out this site.
http://www.best.com/~4forry/
