[Angrist]

This is how I rate movies on IMDd:
1. I analyze how good it basically is, story/acting/etc.-wise.
2. I reflect my personal preference for the movie
3. I take into account the feeling the movie has left me in.

Like I know Save The Last Dance could really have been better and deserved an unbiased 7, I gave it an extra point because I just like feel-good romantic movies. And even though I realize that Fight Club is a very clever and good movie, I gave it a lower score because it was unnecessarily violent in my opinion.
And sometimes I just get a great feeling from a movie, like Jerry Maguire, so I add another point.