I have quite a few fantasy and sci-fi authors that I like. Mercedes Lackey, Sara Douglass (she's Australian), Patricia Kennealy-Morrison,
Isobelle Carmody, Morgan Llywelyn, and Marion Zimmer Bradley for the ladies; David Eddings, Raymond E. Feist, Robert Jordan, and Larry Dixon (Mercedes Lackey's husband) for the gentlemen.
Links:
Robert Jordan-The Ways.
An excellent, if somewhat long-winded author.
The Mallorean Tavern-The Official David Eddings Site
The High King of fantasy!!
Queen's Own-The Official Mercedes Lackey Fan Club
The High Queen of fantasy!!!
Sara Douglass' Homepage
An excellent Australian author
Morgan Llywelyn's Page
Good historical fiction
Patricia Kennealy-Morrison's Homepage                                                    The author for Celtic (or Keltic) sci-fi/fantasy
Raymond E. Feist
Another fantastic author
Isobelle Carmody-The Unofficial Fan-club   
Another excellent Australian author
Marion Zimmer Bradley's Homepage.
A fine author and forerunner of sword-and-sorcery who recently passed away. R.I.P.