I've read HP and the Giver, they're both really good. Did you know the Giver is first in a trilogy, with Gathering Blue and Messenger?

Other good reads:
the Maximum Ride series
Anne McCaffrey's Dragonrider of Pern series
The Shamer Chronicles
Alias (TV series is better, finished now and out on DVD)
Artemis Fowl
Garth Nix's books (I like the Keys to the Kingdom series and Abhorsen series - which our library has)
Terry Pratchett's Discworld books, mainly the Tiffany Aching books (The Wee Free Men, A Hat Full of Sky, and Wintersmith)