'The Farthest Shore' by Ursula Le Guin
Book three of the Earthsea Trilogy.
After I'm finished that I think I'll read the 'Foundation' series by Arthur C. Clarke.. or maybe re-read 'Eragon', 'Eldest' and 'Brisingr' before 'Inheritance' (by Christopher Paolini) is released.
series is by Asimov, not Clarke. ;)
I'm currently reading Catcher in the Rye
and The Many-Colored Land
The latter is the first book in the Saga of Pliocene Exile by Julian May. I've read it several times, but had a hankering to go through it again. About half way through the first book (mentioned above). I love this series.