Metroid is really, really good, and the wiimote+nunchuck controls seem to work better than in most Wii games that tried similar schemes.
Have you tried flying the ship with the gamepad yet? I only played once but it was very unintuitive when the action picked up. I think it is going to have quite a curve for me.
I love Takamaru's Ninja Castle waaayyy more than I thought I would.