Alyssa's Geordie Johnson site is wonderful, with Lucard multimedia as well as a wealth of goodies related to Mr. Johnson's other roles.
Yes! K'lin kaShante's famous Picture Gallery is back!
Elaine Brennan's fantastic and extremely useful Episode Walkthroughs site contains transcripts and sounds from most of the episodes. A lot of work went into it, and it shows. She also offers D:tS e-postcards.
Lindy Cooksey's wonderful Geordie Johnson site includes information on the many roles of the actor who played Lucard, and updated upcoming TV appearances.
The Complete Works of William Shakespeare at The Tech is much more than just an online version of Lucard's and Klaus's favourite source for dramatic recitation. It features a discussion area, glossary, and excellent search capabilities, so even if you don't have as good a memory for line numbers as Klaus does, you too can spout Shakespeare at will.
The Vianden Castle web site tells all about Vianden, the real location of Lucard's castle.
The 2VC Online page will connect you to any and every site with information about Gustav's car!
And, of course, there is the online text of the original Dracula novel by Bram Stoker.