Some which I have re-read recently and still enjoyed:
William Gibson's Sprawl trilogy
Frank Herbert's Dune series
Isaac Asimov's Foundation series
Frederik Pohl's "Gateway"
Robert Heinlein's "The Moon is a harsh Mistress"
Some which I remember liking when I read them many years ago as a teenager:
E.E. Doc Smith's Lensman series
David Brin's Uplift series
Peter F. Hamilton's Greg Mandel trilogy and The Night's
Dawn trilogy
Orson Scott Card's "Ender's Game"
George R. Dickson's "Dorsai!"
