While John Carpenter took the Thing in a whole new direction it was story telling at it's scary best. However, several remakes such as the Day the Earth Stood Still and War of the Worlds seem to be lacking. The Godzilla movie wasn't quite everyones cup of tea either.
What ones would you like to redo considering the capabilities of CGI today?
I am wondering if it would be possible to make "Them" today without it being totally worthless.
Earth versus the Flying Saucers? (kind of done with Mars Attacks)