Metroid Prime Hunters and Pokemon probably. I don't have a ds anymore or the games but i used to use action replay on them and they both have a lot of good codes.
The toothpaste technique has saved most of my gamecube games. Some of my favorites like Super Smash Bros Melee I failed to fix. This was a few months ago..
I wish I could play it on my dsi... I recently watched a trailer for The Green Lantern on the 3DS and it was supposed to come out for: wii, ds, and the 3DS.