Over the past few years, I developed what I believe to be a fairly reasonable scale that allows me to put some thought into the rating a film gets (instead of pulling a random number out of a hat).
I realized I never shared this scale, so I will do so now and I will link to the scale from all future reviews.
10/10 I absolutely loved the film and probably have already pre-ordered the DVD.
9/10 I really liked the film and I will definitely be willing to watch it again.
8/10 I enjoyed the film and probably wouldn't mind watching it again.
7/10 The film had its moments, but I wouldn't rush to see it again.
6/10 The film was watchable, but it is unlikely that I will see it again.
5/10 I don't really know what to think of the film, chances are slim that I'll watch it again.
4/10 I was very disappointed by the film, and will probably not see it again.
3/10 The film really tried my patience, I am glad when it is over.
2/10 I wish I chose another film to see.
1/10 I wonder why I even saw the film at all.
That's all. I have to agree that the difference between 1-4 is very blurry (and I have only ever rated four films lower than 4), but I am happy with this system and hopefully you will see why I weighted my ratings this way.