The Ghost of RubangB on 17 May 2009
I think Kirby: Canvas Curse is one of the greatest uses of the touchscreen on the DS. It's from 2005, and still amazing. It should cost maybe a buck or two by now. I highly highly recommend it.
Also, you can use your DS to download demos from your Wii. Czech out the demo for Rhythm Heaven and whatever else is on there.
