@techhits: You are in luck! In the last few days, there have already been a couple of threads asking a similar question, and there are plenty of good answers:
Personally, I highly recommend Fire Emblem: Awakening, the downloadable Pushmo and Crashmo, Super Mario 3D Land(which you got in the bundle), Ocarina of Time(if you haven't already played it), and the new Animal Crossing. :)
THIS PERSON SPEAKS TRUTH! I can't speak to the new Animal Crossing, as I haven't played it, but all the others are fantastic. And PLEASE play Super Mario 3D Land IN 3D, IT IS AWESOME! You don't really need 3D for most of the games, but I'd recommend trying it and seeing how you like it. For example, in Fire Emblem: Awakening I only click on the 3D for those awesome cutscenes then back to 2D for the actual game. Welcome to the club, duder, and don't forget all the awesome DS games you can now play as well!
EDIT: Oh, and if you are a fan of rhythm music games and final fantasy, I HIGHLY recommend Theatrhythm. I'm still confounded by how much I like that dumb idea of a game.