I wouldn't say that I really hate specific games. Rather, that I strongly dislike some of them. Two that stand out in my mind are The Witcher 2, and Castlevania: Lords of Shadows.
(insert evil laughter here)
...okay maybe not. Actually though I've found myself fairly accurate in gauging beforehand whether or not I'm going to enjoy something, so misses are rare. However, it does happen - Elder Scrolls: Oblivion and Knights of the Old Republic.
With Oblivion, the game just felt to me like such a step backwards from Morrowind in most every way. Storyline was less interesting, graphics were utterly hit or miss (I usually don't care much about graphics, but I found character faces to be on the repulsive side), poor interface on the PC, and it felt so generic, even for the type of fantasy portrayed. Perhaps on it's own, I would not have been so critical towards it (lies, yes I would have!), but the game managed to strike all the wrong chords with my expectations.
Knights of the Old Republic felt as if it's story was forced in places. Hard to exactly pin that one down, but as I played it, I didn't feel it was written very well despite having some fun twists. So, no likey.