Don't Touch Me: Untouchable Remakes

So it seems like every other day we're hearing remakes being announced. So in your opinion which movies should never be remade?

And if they're already a remake of an older movie then which movies should not have a second remake?

These are some of the movies I think should not be remade:


The Godfather
Goodfellas
Jaws
Back to the Future
The Shawshank Redemption
Apocalypse Now
The Matrix
Raiders of the Lost Ark
Titanic


Now I'm sure their are many more but i can't think of any others at the moment.

List yours guy's.