If You Liked Diary of A Wimpy Kid:

Comic Guy Series

Legend of Spud Murphy by Eoin Colfer Benny and Omar by Eoin Colffer

Donuthead by Sue Stauffacher

Attack of the Mutant Underwear by Tom Birdseye

Dear Max by Sally Grindley

Lenny and Mel by Erik Kraft

Dan Gutman has many great series: My Weird School series Zach Files The Million-Dollar series

Time Warp Trio series by Jon Scieszka

The Last Burp of Mac McGerp by Pam Smallcomb

Nicholas by Rene' Goscinny

Underwhere series by Bruce Hale

Stink series by Megan McDonald

Sideways Stories from Wayside School (series) by Louis Sachar

Captain Underpants series by Day Pilkey Ricky Ricotta series by Dave Pilkey

Dear Dumb Diary series by Jim Benton (may seem like it is for girls but is actually written by a guy) Franny K. Stein series by Jim Benton

Attack of the Glowing Eyeballs by Lin Oliver

Flipped by Wendelin Van Draanen Shredderman series by Wendelin Van Draanen

All books by David Lubar: Hidden Talents

Invasion of the Lawn Weenies series

Bone Comics series

Hank Zipzer series by Henry Winkler

Jake Drake series by Andrew Clements

Babymouse by Jennifer Holm

Boyds Will be Boyds series by Sarah Weeks

Hot Dog and Bob series by Lissa Rovetch

Dude: Stories and Stuff for Boys

Magic Pickle comic series by Scott Morse

Any book by Andy Griffiths: Just Annoying Butt Wars The Day My Butt Went Psycho Zombie Butts From Uranus Just for Laughs Just Stupid Just Wacky

Some Nonfiction Titles:

Boredom Buster by Helaine Becher

Boys Book: How to be the best at everything by Dominique Enright

Boys Book of Survival: How to Survive anything, anywhere by Guy Campbell

Uncle John's Bathroom Reader (all different books in the series)

Worst Case Scenario Survival Handbook: extreme junior edition

100 Most Dangerous Things on the Planet by Anna Claybourne

101 Things to do Before your Old by Richard Horne

101 Things You Gotta Do Before Your 12 by Joanne O'Sullivan

101 Things You Wish You'd invented—and Some You Wish No One Had by Richard Horne