Isaac Asimov's Foundation "trilogy"

[RichP714 3,169]

Isaac Asimov's 'Foundation Trilogy' is actually about 8 different books.  A fantastic journey; a bit hard to get started on, but (from what I remember reading it as a kid) once the hook gets in you you have to read them all.

 

http://en.wikipedia.org/wiki/Foundation_series

 

There's a second Trilogy (written after Asimov's death) that's every bit as good.

 

 

    

 

   

[BillD 239]

From a Sci-Fi standpoint, the Foundation Trilogy and the Dune Trilogy stand out for me.  And of course, for the humor, Doug Adams Hitchhikers Guide series.