I enjoyed the "Lost in Space" movie and "I, Robot", probably because I don't know the material from which they were derived, and I liked the movies as stand-alones.
Though I readily acknowledge the flaws of the Star Wars prequels (I can probably find flaws others don't know about, for that matter), I overall still enjoy them.
I'm the only one I know who feels this way, but...I could not STAND "The Blues Brothers". I tried, I really did, but that movie just grated on every nerve I have!
Just a few examples. What are some of yours?