From their website:

?Nintendo of Canada, Signal Collective, and the world renown C.O.D. graffiti crew have teamed up to produce a limited edition line of the Nintendo DS units. The artwork is placed onto 26 DS units, each signed and numbered by the artist.

The DS' focus on each artist's own interpretation on four original characters from the Nintendo universe. And though each artist worked individually, collectively the viewer can see that the design process is very similar. Each week - April 04 , April 11 , April 18 , and April 25 - a new version of these special Nintendo DS units will be unveiled until all four are completed.?

So, the same guys who did the stupid Sony graffiti are making custom DS?s. Meh, at least this doesn?t piss people off.