[quote=Halo]
It's mainly because every time I watch another movie on that "ohfuckwhyhaveInotseenthisyet" list, it makes it into my top 10 or 20. Making a list feels a little redundant when I'm (sort of) aware that there's a whole bunch of other films out there which I'd prefer to the ones going on that list. If I'd only ever seen ten films, all of them (say) Michael Bay films, would it be worth making the list while being aware that all you've experienced as-of-yet is a thoroughly subpar mockery of the great films that do exist?
[/quote]

Yes, it would be worth making the list anyway because of the already stated reasons. I don't happen to care whether or not someone has seen the top X greatest movies of all time as ranked by your magazine/critic/website/whatever of choice.

But if you feel like you can't make an adequate list then that's cool, doesn't really matter one way or the other to me.