Touch Detective on the DS. It got critically panned across the board, but it's actually a really good point and click adventure game on the DS with great characters, great writing, clever stories, very impressive 3D models for DS, and a nice soundtrack. So why did it get critically bashed? I blame it on the fact that it was one of the first point and click adventure games during the re-birth of the genre, around the same time as Sam and Max and Ace Attorney, and I'll be the first to admit the actual gameplay was a bit rough around the edges on your first playthough since a lot of the things you needed to do or find weren't too intuitively laid out. Some objects you had to find were REALLY easy to miss, and quite reasonably could be thought to just be part of the background. So I guess compared to Sam and Max/Ace Attorney, the gameplay wouldn't be as good as those ones.
It's a shame though, cause once you get past the somewhat poor game design, it's a REALLY well written/funny game. Check it out sometime and be patient. Most people who have actually taken the chance and played it end up really liking it. It has a REALLY small cult following, but trust me when I say it's a cult worth joining.