Both are great movies!! I really love Whisper of the Heart. Another good one by the same studio (Studio Ghibli) is Kiki's Delivery Service. In the English version, the voice of the cat, Jiji, is Phil Hartman.
I'm a huge Studio Ghibli fan! I highly recommend Spirited Away, if you haven't seen it.
I've seen Spirited Away and own it. We have a decent sized Anime collection (not the adult kind, but the fun stuff)
I actually thought about naming Tiikiri "The Baron", but am going to save that for my next cat ;-)