I asked the movie question to some people at work today and got lots of blank stares. (This also happens when I ask "Who has been eating my paste?", but that's not important right now.) Seriously, I can list at least a dozen movies from the 90's that will be nice and comfy on 'all time' movie lists:
Saving Private Ryan
Life is Beautiful
Silence of the Lambs
These may not be your cup of tea, but they're all widely recognized. The 00's list is pretty short and I don't really know why. I should say that I'm not trying to run down modern film-making. There are many many good movies out there. Looking at the list of Best Picture nominees I noticed that there are very few 'bad' movies there. Just not many outstanding ones either.