Movies that have been re-done:

Dawn of the Dead
The Poseidon Adventure
Of Mice and Men
Cape Fear
Father of the Bride
Dracula
Fun with Dick and Jane
The Producers
The Amityville Horror
Texas Chainsaw Massacre
Evil Dead

The list is way too long to continue...
I think that there is a chance that the Harry Potter movies will be remade, but as was previously said, it won't be until much further down the road..