To some degree the original Star Wars has done pretty well over time, though watching it with the new CGI scenes highlights that the CGI is pretty sloppy in comparison to the sets and models they used. Just goes to show if you leave it alone and refrain from slapping CGI on everything the old movie still seems pretty good.
Others that seem to have done alright are:
2001 a Space oddity... errr Odyssey and it's sequel 2010
Empire and Return of the Jedi are pretty good still WITHOUT the CGI.
The original Stargate movie still looks pretty decent
Alien and Aliens
Blade Runner
Things that are ok but look a bit dated:
The Black Hole
Tron
Enemy Mine
Those that are struggling:
The last starfighter
Battle beyond the stars
The Original Battlestar Galactica movies
Can you guys think of others?
I think the Bluray version of the Original Star wars is amazing, really clean and because of that still looks fresh.
Star trek the motion picture is pretty dated as the fashion for the uniforms is very 70s
Terminator is a difficult one to say if its dated or not as the T1000 travelled back to the 80s anyway so you could say that one hasnt dated (im confused)
Brazil, is one that hasnt dated, i always saw that movie as what the world would be like today if the na zis had won ww2.