I'm fairly critical, so there's not too many on my list, but the biggest one is that I liked Quest 64 (somehow) when I was younger.
I also love La Mulana 1&2, along with Deadly Premonition, though those are more "cult hits" aka critical failures that 'widely disliked'. But, I'd definitely hesitate to recommend any of them to someone unless I thought they'd be into it.
The online forums are wrong. After years of avoiding it due to bad public opinion I finally got into it last month and it wasn't perfect... not at all. But it was still great, and I thought the gameplay was really strong. I really like parts of it more than DS1
Edit: To clarify why I think the game's not perfect:
These two pix explain point 4 http://imgur.com/1js9v6S vs http://imgur.com/uO3l10d. Blue regions don't register diagonal movement.