Here's my current library haul...and a few favorites:
Artemis Fowl (read them all, loved them all...the graphic novel is also cute)
His Dark Materials (just finished Golden Compass, 'coz I want to watch the movie - well done)
Land of Elyon (read the Dark Hills Divide - book one; cute, very fast read, talking animals)
Coraline by Neil Gaiman (Through the Looking Glass...shops at Hot Topic!)
Stardust - not sure if it qualifies as YA, but the movie was kinda marketed that way. Very entertaining...the book - haven't seen the movie yet.
That's all I've finished for now...I've also borrowed the Inheart/Inkspell...Cornelia Funke series and Theif Lord and Dragon Rider of hers. Should be fun.