Dracula - influential and incredibly boring.
Terry Pratchett - unfunny and can't write to save his life.
Charles Dickens - bloated prose and heavy handed social commentary! Fun!
Lord of the Rings - the template for fantasy literature and a seminal book but it's lack of proper characterisation coupled with the infinite detail makes for a slow and uninspiring read.
Tom Clancy - just write essays about the CIA so we can cut out the crap.
Mentioning the likes of Brown on these threads is an insult to the reader's intelligence. I think it would be better if people focused on literature that's been popular for sometime rather than faddy stuff which is easy to avoid.