1984
Brave New World
Starship Troopers
Les Miserables
War Of The Worlds
Rebirth/The Chrysalids by John Wyndham
20,000 Leagues Under The Sea
Contact
The Butterfly Kid

Not necessarily the top ten, or even the best ten, just the ten that popped into my head while thinking of the list.

If I had to list authors:

Heinlein
Jack Vance
Terry Pratchett
Spider Robinson
John Varley
Joanna Russ
Harlan Ellison
Fred Pohl
Zenna Henderson
Arthur C. Clarke

I think the list of authors is more interesting because it speaks to a body of work that is uniformly excellent.