if you're just talking about US versions, here's the list of DS ones... if you're including all regions, the list is a bit longer.

Mario Kart DS
Wario Ware: Touched!
Castlevania: Dawn of Sorrow
Metroid Prime Hunters
Metroid Prime Pinball
Pac-Pix
Advance Wars: Dual Strike
Kirby: Canvas Curse
Pokemon Trozei!
Pokemon Mystery Dungeon: Blue Rescue Team
Meteos
Super Mario 64 DS
Tenchu: Dark Secret
Feel the Magic: XY-XX
Tetris DS
Mario vs. Donkey Kong 2: March of the Minis
Big Brain Academy
True Swing Golf
New Super Mario Bros.
Mario & Luigi: Partners in Time
Polarium
Yoshi: Touch & Go
Nintendogs
Nintendogs Download Demo
Animal Crossing Download Demo
DS Download Station Vol. 1
DS Download Station Vol. 2
DS Download Station Vol. 3

some of those NFR cards are different than the retail, some of them are the same as retail, and some of them come in 2 different versions, one of each. DS demo cards are also pretty interesting in terms of rarity... they're much harder to get than other system demos because of how nintendo handles the kiosks. also, DS kiosks come in two versions, containing 1 unit or 2 at the store. some of these demos are reserved for "2nd unit" play, meaning they can only be found in stores with a 2nd system out, and thus they're harder to find.