There is this german scifi series, Perry Rhodan, which is over 3000 (you read right) books and still going. Sadly, there were only ~700 published in Brazil. Currently, I'm reading all of them again. I'm learning german just to read the rest!
The #10 is "Battle in the Vega Sector" and is my all time favorite. It is the first one where they go beyond the solar system, and meet intelligent alien races, and engage in a MAJOR space battle. The sheer and boundless sense of adventure still gives me goosebumps. I think I read it over 20 times.
Also, I´m in my 3rd or 4th copy of "Dune", by Frank Herbert (they wear out!). The layers (plans within plans within plans), the multitude of subjects (ecology, economy, politics, religion, loyalty), the hints at things that were (the little excerpts at the begining of each chapter)... I read it whenever I remember. In fact, you just gave me an excuse for another run!
void Indigo