I love Hello Kitty, and I love this series too, along with the English-dubbed anime series "Hello Kitty and Friends" with Sailor Moon's Karen Bernstein as the voice of Kitty.
The casting and the stories are a delight to enjoy. I love the talents of Tara Strong as Kitty and Cree Summer as the villainess Catnip. My favorite episodes are the ones where Kitty plays a princess and Tuxedo Sam the Penguin is the prince in fairy tales like "Sleeping Beauty," "Cinderella," and such; those stories are my favorites. It's like I said, even though I am 24 years old, I still love to read fairy tales. So anyway, I love this Hello Kitty TV series and the "Hello Kitty and Friends" TV series too.