Yea, I started with the "AFI Top 100 Films" and went through all of those (spoiler, you've likely already seen many of them if you are even slightly into movies). Definitely focuses on American films (surprise!).
After that I have begun the "1001 Films To See Before You Die." I suspect I'll be finishing that up in about 3 years (need to hang on that much longer!). Most if not all of the AFI Top 100 Films are in the 1001. Also, again, some of the 901 remaining films you may also have seen already. But the 1001 have a lot more French New Wave, Italian Neorealist, and generally a more cosmopolitan mix. To be sure though the list skews Western.
I'm happy to have another list of films. The set of Kurosawa's favorite films, of course, intersects with the above two lists but appears to add, unsurprisingly, a lot more Japanese films.
Somehow I had to smile just imagining Kurosawa watching "One Flew Over The Cuckoos Nest". Does that film even make sense for someone growing up within Japanese culture?