TOKYO - Imagineer's Kitty the Cool! Was shown at the Tokyo Game Show, and it looked really, really, really cute (bet you didn't think I was going to say that).
The game itself is really just about keeping/speeding up the song's tempo by pressing buttons in a rhythm (and in a circular pattern around the PS pad). While fun, it didn't offer much in the way of a challenge. The concept is very cool though.
Imagineer also has more Hello Kitty products lined up, including an N64 title that is much like Pocket Monsters and a Game Boy RPG-style game.