I mostly just watch things that appeal to me without paying any attention to the critics. Only if a movie is still praised and well remembered years later do I see it because of the acclaim.
However for the well-received films I have seen the ones I hate are:
-Avatar (exactly the same plot as Pocahontas, but without any subtlety)
-Donnie Darko (boring, and I found the main character completely unlikable)
-Gravity (the visuals were great, but the plot and characters didn't hold my interest)
-Boyhood (it was a neat experiment, too bad they forgot to write a plot for it)
The ones I disliked:
-Fight Club (it was an okay movie, but utterly failed to live up to the hype)
-The Big Lebowski (There were a couple of funny scenes, but I did not care what happened to any of the characters and the comedy alone wasn't enough to hold my interest)
-The Witch (I actually love this one for the wrong reasons. It was so joyless and boring, that a friend and I had an awesome time mocking and riffing it, much to the dismay of another friend who showed us the movie because he loved it)