So I may be preaching to the choir here, but for anyone who hasn't checked these out yet, allow me to recommend the series by George R.R. Martin, A Song of Ice and Fire. The first book, A Game of Thrones, is relatively self-contained in its own right, but serves as an introduction to a story of intrigue among nations, epic legends, and personal drama.
Like others on the forum this series served to reignite my interes in the Birthright setting, and years later I learned our DM had been hooked on these books while running our BR campaign. To some friends I've described it as The Sopranos meets King Arthur, but to others I've said it was the single best work of fantasy literature I've read to date. It's mature, but can be quite funny in places as well! Quite a ride (Caveat emptor: This is expected to be at least a six book series, of which only four have currently been published)...
What do the rest of you think? And are there any other books out there, fiction or otherwise, people would like to spotlight as well?