havent read enders game yet, its on my list of to do's....
anyway..
Nonfiction:
biographys of very smart people ie asimov and feynman
books on science. cuz its science bitches
books on puters.
fiction:
would probably just be easier to go by author instead of by book...ive read most/all of by these authors..repeatedly
Issac Asimov(foundation series w007)
Robert Ludlum(good for spy thrillers)
Arthur C Clark(like ludlum more)
Robert A Heinlen(stranger from a strange land or starship troopers probably being my favs)
Shibumi(by Treveniam - spy thriller, possibly best ever written)
Roger Zelazny(seriously this guy mixes sci-fi/fantasy like no other, read his shit! 9 princes in amber, lord of light, creatures of light and darkness all being amazing reads, though all of his other books are good too)
Elizabeth moon-got started on her in middle school with "the deed of paksenarrion" which is a great trilogy, ive since read everything else she does, which is mainly sci-fi, that trilogy being the only "fantasy" set. writes strong female characters, read everything she has written at least 5 times, love her.
Joel Sheppard-only read his cassandra kresnov novels so far, but have re-read them a number of times, really enjoy them.
Neil Stephenson-Cryptonomicon, just a really really amazing book. this guy did TONS of research for this book, and it shows. best "tech" related book out their period(for a fiction book i mean). His other books are damn good too and very well researched
Piers Anthony- a pure fantasy writer, still writes some great stuff that i really enjoy.
i guess thats a start for my favorites...lol