Kurt Vonnegut is by far my favorite author. I've read all of his books, and I've loved them all.
Here they are:
Player Piano is KV's first novel, a thoughtful criticism of technology and our dependence on it.
Sirens of Titan is a humorous account of aliens, time/space travel, and modern man. I wrote a research paper on this my junior year, BTW.
Mother Night was recently made into a movie starring Nick Nolte. It's quite good, but the book is better. It's the sad story of an American spy who gives out secret codes during his Nazi radio broadcasts.
Cat's Cradle is another hilarious book, this time about the end of the world, and, of course, Bokononism.
God Bless You, Mr. Rosewater tells a story behind the story. Probably one of the deepest inquests into human nature around.
Welcome to the Monkey House is his first collection of short stories. There are some beautiful ones in here. "EPICAC" is my all time favorite, while "Next Door" has more plot twists than Microsoft has lawsuits.
Slaughterhouse Five is KV's most famous work. And it deserves to be. "Everything was beautiful and nothing hurt."
Happy Birthday, Wanda June is the only true play KV has written. It made it all the way to Broadway, and I've used it a few times to get people hooked on KV. :)
Breakfast of Champions is the first KV novel I read. It's still one of my favorites. Probably his funniest work of all.
Wampeters, Foma, and Granfalloons is a collection of various essays, which earns it the subtitle "(Opinions)".
Slapstick, another social commentary, is a little more off-the-wall than God Bless You..., but still a great read.
Jailbird sees the return of Kilgore Trout. A classic, and perhaps his most political work.
Palm Sunday is another collection of essays. Maybe not the best book for a newcomer to KV, it is a classic non the less.
Deadeye Dick is a nickname that the main character derives after shooting a pregnant woman a mile away in the head when the gun he is cleaning misfires.
Galápagos is KV's take on evolution. It was the other topic of the afforementioned research paper.
Bluebeard is the story of Rabo Karabekian, master artist and humanitarian, and his life.
Hocus Pocus is a favorite among those who read it. It is a deep, humorous satire of society.
Fates Worse than Death is the third of his collections of essays, and probably his most personal and touching.
Timequake is KV's final novel, and perhaps my favorite. A monumental read.
Bagombo Snuff Box is KV's last book. I'm reading it right now, but so far it's great. It's another collection of short stories in the vein of Welcome to the Monkey House.
Joseph Heller is another of my favorite authors. I'm just getting into him, but he's excellent.
Catch-22 is perhaps the all-out BEST book ever written about war, and, well, how funny it can be.
Closing Time is the sequel to Catch-22, and I'm in the process of reading it.
Michael Crichton is my other favorite author. I've read most of his stuff, and it's all good. A good story with LOTS of useful information packed in.
Andromeda Strain is the original Outbreak/The Hot Zone.
Congo. Hey, guess what, the book is a hell of a lot better than the movie!
Sphere. See above. My favorite of his books.
Airframe has a great resolution, and is one of his most informative.
Jurassic Park, the blockbuster hit. As usual, the book is more worth it than the movie.
Lost World, this time, much more worth it than the movie.
Great Train Robbery is a classic story, where you'll be rooting for the bad guy.
The 13th Warrior/Eaters of the Dead. Originally Eaters of the Dead, now a hit movie, although I haven't seen it yet.
Timeline is yet-to-be-released.
Rising Sun is good as a movie, too, but the book is good in it's own right.
Disclosure - well, see above.
The Terminal Man is the story of a medical experiment gone awry.
Travels is MC's autobiography.
The Silicon Boys by David A. Kaplan is a great history of Silicon Valley and the computer industry.
The Princess Bride by William Goldman is a classic, classic story. A great movie and better book - I've read it 7 times!
Star Wars IV by George Lucas is the best book of the original trilogy (I haven't read Brooks' Phantom Menace yet). Probably the best non-KV sci-fi I've read.
There are also some subjects that have many great books, too many to mention individually here:
Dilbert
Skateboarding
Chess