OK, one last thing. I've written some code to measure similarity between different champs. This is a metric that describes how similar (or not similar) are the ratings of two champs.
Here's the formula.
The As are your normalized ratings (i.e. I subtract your overall average rating from your individual ratings). The Bs are some other champ's normalized ratings (of the movies you have in common).
The similarity is a value between -1 and 1. A value of 1 indicates perfect similarity (that is the value you get if you compare yourself to yourself). A value of -1 is perfect dissimilarity (e.g. "anything I rate as above average, this guy rates as below average ALL THE TIME).
A value close to zero indicates orthogonality, meaning there is no correlation between the two champs' ratings (i.e. they are all over the place, there is no pattern).
For you nerds out there, this is called cosine similarity.