35mm - Find 35 Movies Hidden in this Animation

This is great, if frustrating, fun. There are 35 great movies hidden in this video. Take a look and see if you can spot them all. I managed about twenty but the others are still foxing me!

The first few are deceptively easy and I think that this lulled me in to a false sense of security about getting the rest of them.

I have always rated myself something of a cinemaphile (or cinephile if you prefer) but now I am not so sure! How many did you get – and more interestingly – which ones did you fail to answer?