Yup, I've been scrambling to get the DS Laytons and Picross 3D since the news hit. Other noteworthy games include Mario Vs. Donkey Kong (all three DS ones), Picross DS, and WarioWare D.I.Y. There's also Dragon Quest IX with its weekly quests, though you can (apparently) get those otherwise by locally connecting to a copy that already downloaded them.
One I'm not sure of is GTA: Chinatown Wars. Are there any special Wi-Fi-only missions to be worried about, or is it mostly costumes and stuff?