A book is the only place in which you can examine a fragile thought without breaking it, or explore an explosive idea without fear it will go off in your face. It is one of the few havens remaining where a man's mind can get both provocation and privacy. ~Edward P. Morgan

Here are a bunch of titles that I think any decent book lover should read. This is an incomplete list because it's a bit too much to list all of them right now. But I'll keep revising it from time to time. 

Classic Literature:
Tess of D'Urbervilles - Thomas Hardy
Mayor of Casterbridge - Thomas Hardy
Wuthering Heights - Emily Bronte
Tale of Two Cities
Merchant of Venice
Count of Monte Cristo
Lolita - Vladimir Nobokov
Romeo And Juliet

General Knowledge (We all like to flaunt it)
The Discovery Of India - Nehru
The Google Story

Just for fun
The White Tiger (its NOT fun, but there's a reason you should read it)
The Girl Who Kicked The Hornet's Nest - Stieg Larsson
The Girl With The Dragon Tattoo - Stieg Larsson
Sherlock Holmes
Percy Jackson Series

On my reading list
As I Lay Dying - Faulkner
War and Peace - Tolstoy
The Fountainhead - Ayan Rand
Atlas Shrugged - Ayan Rand
Canterbury Tales - Chaucer
Memoirs Of A Geisha
Three Men In A Boat

It's no coincident that there isn't one by Chetan Bhagat. My opinions are too strong for them in a concise manner here. I haven't read any by Paulo Coelho or Dan Brown, so I don't have any opinion about them. 

My test of a good novel is dreading to begin the last chapter.                                                                                      ~Thomas Helm