Nashville - You should see this but I think it's the kind of movie that takes a condescending view of its subject without really realizing it, which rubs me the wrong way.
The Sixth Sense - I saw this in the second run theater and liked it then. I haven't seen it sense and I think alot of people don't think it turned out to be an enduring classic once the hype had passed and everyone knew the twist.
The Departed - Good but not one of my favorite Scorsese movies and not better than alot of the movies it's paying homage to.
The other movies are all great and my opinions on them are pretty status quo.