DSiWare (Monday) - Art Academy: First Semester (800 points) - Oscar in Toyland (800 points)
Retail (Tuesday) - Bleach: The 3rd Phantom - Cloudy With a Chance of Meatballs - Mario & Luigi: Bowser's Inside Story - Marvel Ultimate Alliance 2 - My Boyfriend - Naruto Shippuden: Ninja Destiny 2 - Princess in Love - Scribblenauts
There was enough hype about Scribblenauts that I didn't even know the new Mario & Luigi RPG was out this week. Having said that, I've tried Scribblenauts, and... well, try before you buy is all I'm gonna say.
The difference is in third-party software. People who bought Cubes generally did so to play first-party Nintendo software -- Mario platformers, Mario Kart, Metroid, Zelda, Smash Bros., anything that Miyamoto comes up with.