I've seen all of Princess Tutu and it's good, though it does indulge in the anime mix of "way too gooey & cutey" plus "way too dark and abstruse" that we all know and love. Mr. Cat never fails to be amusing, but the same (alas) cannot be said for Drosselmeyer. The sine qua non of this kind of show is Revolutionary Girl Utena, which is well worth a look if you haven't seen it. On the other side, I believe there are Web sites that will tell you which eps of Naruto and InuYasha actually contain new content. Go anime!