The Riftwar Saga by Raymond E Feist -
1: Magician/Apprentice
2: Silverthorn
3: A Darkness at Sethanon
A great series. Follow Pug and Tomas as they battle out their childhood enemies, search for love, and become much greater than they ever dreamed of, and more important than they ever imagined, not just for each other, but for the fate of the universe itself. This is fantasy at its best.
The Sword of Truth Series by Terry Goodkind
1: Wizard's first rule
2: Stone of Tears
3: Blood of the Fold
4: The Pillars of Creation
5: Naked Empire
6: Chainfire
7:Temple of the winds
8: Soul of the Fire
9: Faith of the Fallen
10: Phantom
11: Confessor
A truly rewarding series that will take you on a private journey through another world from which you will never fully return. Follow a simple woodsman as a mysterious and wonderful woman comes into his life, seeking help; and then watch as his entire world turns upside down and he realises the harrowing truth behind his past.
The Redemption of Althalus by David and Leigh Eddings
A wonderful stand-alone epic which deals with a thief who is entrusted with a grand responsibility. Namely, he must steal a book from the edge of the world and take care of a cat while he does it. But soon he realizes that this is no ordinary book, and no ordinary cat.
The Otori Trilogy by Lian Hearn:
1: Across the Nightingale Floor
2: Grass for his Pillow
3: Brilliance of the Moon
An awesome trilogy that follows the life of a sole survivor of a massacre. Given a new name, Takeo must change his life to accommodate for a new master. Not only that, but he must begin training, because it is clear that he has strange abilities. And abilities are not to be wasted.
Classic ninja style fantasy.
Just some series that others haven't mentioned yet.