Chief,
For a classic:
"Maltese Falcon" Dashiell Hammett
"Great Gatsby" F. Scott Fitzgerald
"Connecticut Yankee in King Arthur’s Court" Mark Twain
For something sociological:
"God Delusion" Richard Dawkins
"Generation Me" Jean Twenge
"Infidel" Ayaan Hirsi Ali
For something funny:
"Forrest Gump" and/or "Gump & Company" Winston Groom
"Practical Guide to Racism" C. H. Dalton
"Fallible Fiend" L. Sprague de Camp
For something touching:
"Five People You Meet in Heaven" Mitch Albom
"Of Mice & Men" John Steinbeck
For something adventurous:
"Skeletons on the Zahara" Dean King
"Kidnapped" Robert Louis Stevenson
"Around the World in 80 Days" Jules Verne
"Tarzan of the Apes" Edgar Rice Burroughs
(better than the movies!)
For something thought-provoking:
"Brave New World" Aldous Huxley
"Pucker Up: A Hands-On Guide to Ecstatic Sex" Tristan Taormino
:)