Interesting bunch, and here's mine.... *drum roll*
Terry Pratchett ~ His Discworld series although can get quite repetetive from book to book the further along you progress can seem to combine the works of fantasy, comedy and even suspense at some parts. His writing style in itself is very creative and unique.
Richard Adams ~ Richard Adams and his famed Watership Down. He's a very good writer, heading more into the suspense department then anything else. His writing his incredibly imaginable; you picture evreything he writes clearly in your mind as you read it. Thus, his description is also very good. His writing his incredibly gripping, and in a lot of places leaves you guessing what'll happen next, why something happened or even throw something completely unexpected into it. It's also filled with... I think action is really the only word for it here, so yeah, very action filled.
David Clement-Davies ~ I've only read two of his books, Firebringer and The Sight. From those two closely linked books (I think there's a reference mid-way through one of them two the other) I've found him to be a very good writer, for, well pretty much the same reasons as Richard Adams; great description, suspensefull, surpruising, action-packed... the list goes on and on.
Robin Jarvis ~ A great fantasy writer. One of the best. His books Deathscent and his trilogy, The Wyrd Museum were my favourites. His writing combines action, suspense, fantasy, originality, great description, almost flawless writing techniques and one hell of a good read. His books are however, incredibly blashpemous (sp?) so if you're religous, you might want to pass this one up.
Philip Pullman ~ His Dark Materials. The greatest written trilogy of all time. Ever. His writing combines originality, suspense, action, romance and fantasy, but not your cliched fantasy, pure originality. You can never seem to guess what actually happens next, with surprises round every corner. Incredibly written; it'll have you on the edge of your seat, and it's just a book. In fact, why don't you stop reading this and go read His Dark Materials? Perfect description, flawless writing style. Definately the greatest writer of our time.
Well, there's a few of mine, go read books by them, you'll like it.