High profile, widely acclaimed games that seem exemplary made and deserving of praise... and I just don't have any interest in actually playing them. Sure you "Don't know till you try" most of the times, but I have a hard time giving games a shot when I don't have even a modicum of curiosity. I'm someone who needs some hook based on my personal preferences, and I'm not willing to go out of my comfort zones often. I'm fairly content in the kinds of games I know I enjoy. This could change with time, and I won't ever critique something that I haven't played myself; but at this moment none of these will be on my wishlist.
Some are whole series, others are just that particular entry. Also if I added every single game that this applies to I would die, so I suppose you could ask if a particular game would be on the list or not (so long as it vaguely fills the top criteria of positive notoriety)