Laputa: Castle in the Sky

"When an unconfident young woman is cursed with an old body by a spiteful witch, her only chance of breaking the spell lies with a self-indulgent yet insecure young wizard and his companions in his legged, walking home."
(http://www.imdb.com/title/tt0347149/)
original title: "Hauru no ugoku shiro"
original release: November 20, 2004
USA release: September 5, 2005
this is one of my favorites. it has a cool robot, good story and a awesome theme