Orson Scott Card- The Homecoming series
VERY good series (although, much like Battlestar Gallactica, once you figure out that the basic premise is basically Mormons in space, it's hard to tune that aspect out because you will see it pop up
everywhere). Pretty much anything
Orson Scott Card writes is pure gold. But even better than Homecoming, I would recommend:
-The Ender series -- probably the best sci-fi I've ever read.
-Pastwatch: The Redemption of Christopher Columbus -- perfect juxtaposition of historical fiction and sci-fi.
Next favorite would probably be the Mordant's Need series by
Donaldson. Ignore the fact that the titles and the covers might lead one to believe that they are romance novels. They aren't. Interesting series in that there is basically only one predominant type of magic/mythology that is dealt with, and it otherwise could have been a very real life story of political intrigue in medieval Europe. Donaldson's big series, The Chronicles of Thomas Covenant the Unbeliever, is also pretty good, but it took me awhile to get into these. I think I started and stopped reading the first book three times before plowing through it and realizing just how good it is.
Not sure how I went so long without even knowing this series existed, but I read
Zelazny's The Chronicles of Amber a few years ago, and found it thoroughly entertaining.
Footfall by
Larry Niven and Jerry Pournelle is some VERY good sci-fi of the "earth gets invaded by aliens and it is up to a few plucky humans to turn the tide against overwhelming odds" variety. Overall, I'd pretty much consider Niven to be a genius in the sci-fi realm. You pretty much can't go wrong with his stuff, even if some of it may seem a bit dated now. He's just a fantastic story teller with a knack for explaining fairly complex scientific stuff in a way where the common reader can understand it and buy into it being real and serving as a basis for his stories.