Dr.Seuss :3
Always a favorite in my heart.
Um...
Eragon/Eldest - Christopher Paolini
Lord of the Rings - J.R.R. Tolkien
Chronicles of Narnia - C.S. Louis
Ender's Game - Orson Scott Card
Evil Genius - Catherine Jinks
Deltora Quest - Emily Rodda
Airborn/Skybreaker - Kenneth Oppel
Hungry City Chronicles (Mortal Engines, Predator's Gold, Infernal Devices, A Darkling Plain) - Philip Reeve
Treasure Island - Robert Louis Stevenson (Who doesn't like Pirates? Well, except maybe ninjas...)
Different fanfic books (Halo, Starwars, etc.)
Recemendations:
1. Hungry City Chronicles - Steampunk world in which cities are build on giant wheels that move around and have "jaws" that "eat" other towns (Catch up the the other towns and grip them in giant pinchers. The captured town is then used to repair, addon to, and provide for the host town). Centers around a boy and girl from the town "London". One of my favorite series of all time.
2. Airborn/Skybreaker - Again, a somewhat steampunk world in which the airplane hasn't really been invented and airships (blimps/zeppelins) traverse the skies. Centers around a boy that was born on and airship and is now working on one.
3. Deltora Quest - A fantasy story in a time in which a evil ruler has captured the kingdom of Deltora. A boy is given the task to retrieve 7 (or maybe 8) stones with mystical powers that will drive the ruler away. It sounds pretty stupid, but is quite a good read. And if you like and finish the series, there are two (or possibly more) branch off series, Dragons of Deltora and The Shadowlands.
4. Ender's Game - A story set in the future about a 6-year-old boy genius who gets recruited into the military to help fight the "buggers" (An alien race resembling ants/bees). Very good, but a bit confusing at times.
5. Evil Genius - Another boy genius that is taken to EVIL (A school for evil people. It's an acronym, but I don't remember what is is) on the request of his jailed father. Pretty good story with quite a few plot twists.