NPR is asking for the best YA books.

Unfortunately, you can only list five (but they can be a series). My five:
The Thief of Eddis series (starts with The Thief) by Megan Whalen Turner
Runaways by Brian K Vaughan (not as much the rest of the series)
Sabriel, Liriel and Abhorsen by Garth Nix
Girl Genius by Phil & Kaja Foglio
A Fistful of Sky by Nina Kiriki Hoffman

Others:
A Wrinkle in Time by Madeline L’Engle
His Dark Materials by Philip Pullman
Discworld – Tiffany Aching by Terry Pratchett
A Matter of Magic by Patricia Wrede

Obvious (which I loved):
Harry Potter
Hunger Games
The Hobbit

What I’ve read recently (need more time to judge as to best):
The Girl Who Circumnavigated Fairyland in a Ship of Her Own Making by Catherynne M. Valente
Mythos Academy series by Jennifer Estep
Shadow Falls series by CC Hunter
Thirteenth Child by Patricia C. Wrede
Boneshaker by Cherie Priest