Boyhood - I consider this a fantastic experiment with a fantastic result, and I have nothing but praise to Richard Linklater for it. But the final product, as a film, is terribly lacking. At any point the life of Mason is about to turn interesting/dramatic they cut it. Life is not as monotonic as pesented. Im glad it didnt win the best pic oscar.
Gravity - Fantastic directing, cinematography and editing. I love everything about it visually. I do not dig Sandra Bullock's acting and the screenplay is kinda lame so I cant bring myself to rewatch it again.
Crash -This is a film that tackles serious social issues in the most superficial manner possible and I just cant stand it. For me this is the worst film to ever win the oscar for best film.
Frozen - Worst Disney feature film of the 2000's for me.