Inspired by theO Chat in order:

(1) Spirited Away
(2) Porco Rosso
(3) Kiki's Delivery Service
(4) Howl's Moving Castle
(5) Princess Mononoke
(6) The Cat Returns
(7) Lupin III
(8) PONYO
(9) Castle in the Sky
(10) Nausicaa
(11) My Neighbor Totoro

Wow, I've seen a lot of their movies @_@