I love
The Road. I'm manly enough to admit that it's the only book that's ever made me cry- both times I read it!
Based on recs from this forum, I just read
The Forever War (military-themed sci-fi) and was not disappointed. Great book; very creative. So much of what goes on in the novel is relatable to what's going on with America's involvement in Iraq and Afghanistan.
I plan on reading Heinlein's
Starship Troopers soon for the pro-war counterpoint.
I'm currently rereading
Neuromancer by William Gibson. Great near-future sci-fi. It's amazing how prescient it seems.