I use a service to keep track of this for me...
FilmTrust is a rating/annotation research project by Jen Golbeck. The cool thing is that her service outputs RDF/XML of all of your ratings…
I made a little bit of code for my blog that automagically gets my movies and my ratings of them.
The only thing it doesn’t do is determine which ones are in the top 100… but if you know some PHP I’m sure you could modify it to do the same.
Hope this helps out others wanting to achieve this goal in some way!
