#10 The Foundation Trilogy (and it's extensions) - Issac Asimov
Planning for a better future? Do it scientifically. Asimov's future history is a classic. It's one of theose series that is more heard of and spoken about that actually read. Which is a shame.
#9 Jem - Fred Pohl
Aliens, politics and environmental disaster. I once picked up a copy of this book whilst bored in a college library (whilst a friend copied my homework) and it's remained a firm favourite for years.
#8 Three Men in a Boat - Jerome K Jerome
Written over a hundred years ago; it's still hilarious. Everyone's heard of it; no one's read it.
#7 Earth Abides - George R Stewart
This is one I bet most people have never heard of. I got my copy from a second hand book store for ten pence (I took a chance). Post apocalyptic fiction at its best.
#6 The Songs of Distant Earth - Arthur C Clark
An interstellar love story - I blubbed (a bit) when I first read this one.
#5 The Kraken Wakes - John Wyndham
An invasion from outer space that went un-noticed for a while
#4 Torn - Drew Wagar
OK - so I have a vested interest in this book (read the acknowledgements section...).
#3 Brideshead Revisited - Evelyn Waugh
Every time I read this I relate so much with Charles Ryder
#2 The Saga of the Exiles - Julian May
Jumping from the frying pan into the fire...
#1 The Mote in God's Eye - Larry Niven and Jerry Pournelle
I just love it