I might have to look into some of those suggested here, I have been looking for something new to read. As I said above, currently trying to read the Killer Angels by Michael Shaara.
Some of my favorites, which have been mentioned I think, but worth noting:
A song of ice and fire series (Game of Thrones) - George RR Martin. One of the best series I have ever read.
The Dresden Files - 13 books, and Jim Butcher continues to amaze me how he can keep things fresh and continuously develop the characters the way he does.
The Kingkiller Chronicles (Name of the wind/Wise Man's Fear) - Patrick Rothfuss. Could not put it down. Want the last book soooo bad.