Based on the mentions from you guys, I'll bump these to the top of my reading list:
A Clockwork Orange by Anthony Burgess
Fahrenheit 451 by Ray Bradbury
Great Expectations by Charles Dickens
His Dark Materials by Phillip Pullman
If on a Winter's Night a Traveller by Italo Calvino
The Martian Chronicles by Ray Bradbury
The Count of Monte Cristo by Alexandre Dumas
The Handmaid's Tale by Margaret Atwood
To Kill a Mockingbird by Harper Lee
Watership Down by Richard Adams
Hopefully I'll also soon get to American Gods, A Wrinkle in Time, Foundation and Empire, The Gods Themselves, The Day of the Triffids and all the other recommendations
First up: His Dark Materials by Phillip Pullman