If you don't remember what movie it was, I guess you can give it a fair shake next time.

I don't remember what movie it was, but I bet if you asked me about it (because you just saw it, or something) I would give you the opinion I formed that night. Even if it's not fair.

And my point is this: we're not objective observers. EVERY movie we see, we see subjectively. And the origin of our subjection is all over the map, day to day, so the movies/songs/whathaveyou that we think we like are more of a reflection of what we were feeling at the time than any objective thoughts we had about it.