Nothing against your quantitative-analysis efforts, but I would be more interested in your qualitative final verdict:
a.) What movies surprised you and why?
b.) What movies did you especially dislike and are there any general patterns connecting them? (I believe you mentioned something about gangster films but were there any other patterns that you disliked?)
c.) Were there any movies that confused you (not as in "why is that on the list" but as in "I really don't know how to feel about this film")?
d.) What films do you feel are missing from the list?
PS: No need to answer these questions separately, just some suggestions...