Animal Crossing! its just so random and little-kiddy, (yes its a proper word... actually no its not) i also really enjoyed zelda: phantom hourglass (same touch screen movement interface) and geometry wars: galaxies is absolutely insane! its honestly nothing you would expect it to be. its really addictive and fast-paced, especially as you get furthur through. mario kart, new super mario bros and mario party ds are obviously great choices, and kirby sqeek squad is great. hey it said favourite games.
Mine has to be the Ace Attourney/Gyakuten Saiban Series, though I wish they'd hurry up and release Apollo Justice
