This is a piece of software, but it's a fascinating use of the DS' Wi-Fi capabilities. It's essentially a version of VNC that can run on the DS and shows two screens—a larger version of the full PC screen and a zoomed window. The software is completely homebrew and it's called PointyRemote, which could also be the name of a death metal band.

PointyRemote release 0.000015a [1emulation via NewLaunches]


Nintendo DS for $129