What games can you acknowledge are most likely good games, but just aren't for you.
See, if you don't like Halo or Zelda or Final Fantasy VIII/IX/X, there's an incredibly strong possibility that it's more due to your own personal tastes than the idea that everyone in the world is wrong but you.
The first person to use the word "overrated" gets banned. I will hack into this forum and ban you myself.
For me the biggest examples are probably the Gran Turismo games. I guess I just don't like realistic racing games. After that, I guess it would be Castlevania and Metroid. There's something about side scrolling adventure games like those that drives me up the wall. I prefer Castlevania to Metroid, because at least I like the music and ambiance of Castlevania.