Great website that lets you read children's books online... This actually works! There are 227 different books to choose from.
50 Books Every Child Should Read by Age 16 ~ How many have your kiddos read? ~ from In the Playroom
50 Must Read Classics for Kids - Teach Beside Me
Great Girls Your Daughter Should Know (Before she reads Twilight) -- This is seriously one of the greatest lists I've ever seen. I've read all but 3 of these.