Always been a big bookworm myself. I have enjoyed some modern pop fiction like Harry Potter,various Michael Crichton, some of the Dan Brown stuff before he got too weird for even me, etc. Though I myself have always been moreso fond of the older works of literature. Much of my list be the classics of the 20th century literature, Ancient Literature, and a hodge-podge of History. This is a big reason why I like the Bible, which is merely a compilation of many different Ancient texts handed down and copied faithfully throughout time tiself and were I to make a list many of its books and authors would surely deserve top spots in it.
However I am assuming this topic is moreso on books besides those in the Bible so here is a list of some of the books I have read that I can remember best off the top of my head that I recommend to anyone that is a fan of reading. Though I would urge some caution as some of the books is very mature content:
The Travels by Marco Polo
Lives of the Caesars by Suetonius
The Conquest of Gaul and the Civil War by Julius Caesar
Catcher in the Rye by J.D. Salinger
Tropic of Cancer by Henry Miller
Lolita by Vladimir Nabokov
Brave New World by Aldous Huxley
One Flew Over The Cuckoo's Nest by Ken Kesey
Johnny Got His Gun by Dalton Trumbo
Heart of Darkness by Joseph Conrad
Dracula by Bram Stoker
Lord of the Rings by JRR Tolkein
On Guerilla Warfare by Mao Tse-Tung
The Federalist Papers by John Jay, James Madison, and Alexander Hamilton
The Odyssey by Homer
1984 and Animal Farm by George Orwell
The Prince by Niccolo Machiavelli
Galapagos and Breakfast of Champions by Kurt Vonnegut
Orestes and Other Plays by Euripides
The Inferno by Dante Aligheri
The Jungle Book by Rudyard Kipling
Mutiny of the HMS Bounty by William Bligh
Lord of the Flies by William Golding
Last of the Mohicans by James Fenimore Cooper
Le Mort D'Arthur by Tomas Mallory
The Great Gatsby by F. Scott Fitzgerald