What's your favirote book?

Being an avid reader, I can't just name one book.
Here are some of my favs:

People of the Lie - by Scott Peck (a study of human evil)

Toxic Parents - By Susan Forward (dysfunctional parenting & it's effects)

When Rabbit Howls - Truddi Chase (author had 90+ multiple personalities)

Thunder of Justice - Ed & Maureen Flynn (Catholic prophecies, end times)

Hostage to the Devil - Malachi Martin (True tales of the possessed)

Man, favorite book....

er...
I'll break it down by category

Thought
-----------
Fahrenheit 451 by Ray Bradbury

Fantasy
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American Gods by Neil Gaiman

Graphic Novel
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Watchmen by Alan Moore

Horror
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Deathbird Stories - Harlan Ellison

SciFi
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More than Human - Theodore Sturgeon (Speed of Dark by Elizabeth Moon and Rendevous with Rama by Arthur C Clarke tied for 2nd)

Comedy
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Ultimate Hitchikers Guide to the Galaxy by Douglas Adams

End of the World
------------------------
Good Omens by Neil Gaiman and Terry Pratchett

Drama
------------
Brothers K by David James Duncan

Ok thats all.....

Well, I haven't read anything but non-fiction for years, and there are so many good ones out there. But if I had to choose my all time favorite book/books of all time I would have to go all the way back to....

The Lion, The Witch and the Wardrobe - C.S. Lewis

along with the rest of the Chronicles of Narnia.

To this day I find it some of the cleverest and most enjoyable reading.

A close second - The Little Prince.

Guess in the end sometimes I just need to get away from all the grown up stuff and revisit the kid inside.

i have a few favourite books;

Fierce People- Dirk Wittenborne

Artimus Fowl- Eoin Colfer

Angela's Ashes- Frank McCourt

Adrian mole diaries( all of them)- Sue Townsend

the Acid house- Irvine Welsh

there are more- but i cant remeber lol