Aw man, does anyone remember Chibi Robo? I can't even remember if it was good. I just remember this neat robot.
Had it, didn't finish it, gave it to a friend.
It's good. Really original, really weird, surprisingly dark story for all the cheery fun it provides.
They made 2 more, though they weren't real sequels unfortunately. One was a DS game which America only got via Walmart for some reason, and the other is a 3DS downloadable game which is either on its way here or just came out (I downloaded the demo but haven't tried it yet).