The World Ends With You is probably the weirdest DS game I have ever played, weird because I almost took it back to the store, and then turned around and loved it. The music was not my style, at all, but after a little while I was hooked on it in the best way. The combat is one of the most difficult combat styles I have ever seen in a game, where you try to control 2 characters, one on the top screen, other on the bottom, with completely different controls at the same time, and it frustrated me to no end... and then I got better at it, and found it very enjoyable, the game makes you work for your victories. Yahtzee was right though, the clothing styles are simply ridiculous.
I also love the Phoenix Wright games to death, but I don't think a single copy of any of the games exist in Michigan, so I had to play them on an emulator
Edit: Gah I completely forgot, all of the Mario RPGs on the DS are a blast, and Chrono Trigger is on the DS, which I like better than most of the old school Final Fantasy games put together (Have not played 4)
Edit 2: I also enjoyed Okamiden, it wasn't nearly as good as the first, but I still had a lot of fun with it, and Chibiterasu is simply adorable
I also love the Phoenix Wright games to death, but I don't think a single copy of any of the games exist in Michigan, so I had to play them on an emulator
Edit: Gah I completely forgot, all of the Mario RPGs on the DS are a blast, and Chrono Trigger is on the DS, which I like better than most of the old school Final Fantasy games put together (Have not played 4)
Edit 2: I also enjoyed Okamiden, it wasn't nearly as good as the first, but I still had a lot of fun with it, and Chibiterasu is simply adorable