These are some books I've recently re-read, which I know for a fact I've reviewed on here before, but thought I'd give another mention to today, since I love them so much.
Michelle Paver's Chronicles Of Ancient Darkness series:
A series of 6 books that tell the story of Torak who finds himself alone in the forest and bound to complete a quest he'd promised his father he'd do as the man lay dying after being mauled by a demon bear. Only 13 Summers old, Torak is forced to face the fact that he's destined to rid the forest of the evil that has come to it. It's a fantastic series that's officially meant for children, but which most lovers of Fantasy novels will enjoy, I think.
J K Rowling's Harry Potter Series:
For anyone who happens to have been underground for the past 15 years or so - which is the only way you could possibly not know of these books - I'll tell you that this is a series of books about a young wizard named Harry Potter; a wizard who doesn't know he is one until his 11th birthday, despite the fact he's famous, since he - at the age of 15 months - somehow survived a killing curse, leading to the downfall of the darkest wizard of all time. However, having grown up with muggles (non-magic folk) Harry knows nothing of this, and is under the mistaken impression that the death of his parents and the lightning scar on his forehead were caused by a car crash.
Which Witch by Eva Ibotson:
Arriman The Awful is the typical evil wizard, but being the most feared wizard of the North is hard work, and now he wants to retire. After waiting several years for a new wizard whose coming was foretold to him by a fortune teller Arriman decides he'll have to take the only option available to him; he'll have to get marrried and produce an heir. But which witch should he marry? He decides to hold a contest to decide.