Good Books for Your Kids: PBS Kids' Bookfinder...
PBS kids has a great bookfinder database on their website to help you find great books for your child.
Give Bookfinder the age of the child, the theme that interests her or him and whether it's book to be read aloud or read alone and voila, a printable list with title, author, and a description of the book pops up. For example, you can search for Fantasy Books for a 2nd Grader to read to herself. Very nice!
If you want even more book suggestions for your kids, I highly recommend :
The reading lists in this book are very handy and written by a local expert! Check it out of the library!
Want even more reading tips for kids? Take a look at Amazon's Summer Reading Lists for Kids, Powell's Summer Reading Ideas for Kids, Barnes & Nobles free summer reading program, TDBanknorth's 10 books for 10 Bucks, and Half Price Books' Reading Rewards Program.