Terry Gookind's Sword of Truth Series - Damn good fantasy that has a distinctly adult tone.
Terry Brooks different series (in order) -
The Original Shanarra series
The Heritage of Shanarra Series (btw) the fifth book listed there is actually seperate from the 1st 4 listed there and is actually a prequel to the 1st series.
Voyage of the Jerle Shanarra
Piers Anthony
Incarnations of Immortality - A great mix of fantasy and sci-fi.