Funny

This genre should be fairly self-explanatory, but I'll explain anyway: these are books that I found funny. Some are completely focused around humor while others work laughs into the plot, but they're all funny.

10 / 10 (Fantastic!)
The Dresden Files series by Jim Butcher
Catcher in the Rye by J. D. Salinger

9 / 10 (Really great!)
John Dies at the End by David Wong
The Importance of Being Earnest by Oscar Wilde, Adapted to a Novel by Charles Osborne
Some Like It Hot-Buttered by Jeffrey Cohen
The Hogfather by Terry Pratchett
Artemis Fowl and the Atlantis Complex

8 / 10 (Great)
The Night Watch by Terry Pratchett
The Absolutely True Diary of a Part-Time Indian by Sherman Alexie (First)
Men at Arms by Terry Pratchett
The Guernsey Literary and Potato Peel Pie Society by Mary Ann Shaffer and Annie Barrows
The Little Prince by Antoine de Saint-Exupery

7 / 10 (Very Good)
Small Gods by Terry Pratchett
Jingo by Terry Pratchett
The Absolutely True Diary of a Part-Time Indian by Sherman Alexie (Second)
Feet of Clay by Terry Pratchett
Soul Enchilada by David Macinnis Gill
Suck It Up by Brian Meehl
Artemis Fowl: The Time Paradox by Eoin Colfer
God Save the Child by Robert B. Parker
The King of Attolia by Megan Whalen Turner
The Queen of Attolia by Megan Whalen Turner
The Thief by Megan Whalen Turner
Ranger's Apprentice Series by John Flanagan
The Mysterious Benedict Society and the Perilous Journey by Trenton Lee Stewart
The Mysterious Benedict Society by Trenton Lee Stewart
Life, the Universe, and Everything by Douglas Adams
The Restaurant at the End of the Universe by Douglas Adams

6 / 10 (Fair)
Paper Towns by John Green
Sky Realm by Rebecca Moesta and Kevin J. Anderson
Chasing the Bear by Robert B. Parker
Burn Notice: The Fix by Tod Goldberg
The Judas Goat by Robert B. Parker
The Godwulf Manuscript by Robert B. Parker
Mostly Harmless by Douglas Adams
So Long, and Thanks for all the Fish by Douglas Adams