No list like this is, or can ever be, right. Because it's all about likes, and dislikes, values, what you deem to be important, prejudices, etc. Still, for youngsters, and not-so-youngsters who want to see what makes a good movie, this list is a good place to start.
Citizen Kane, and North by Northwest are classics by any standard.
I'd have put Blade Runner ahead of Raiders of the Lost Ark, though. And although Leon, The Professional made the list, I would have included Alien, which I didn't see on there.