A recent good example of a very *BAD* remake: The Ladykillers. I usually like Tom Hanks, but not this time, thank you.
The one good thing that might have come out of it is that perhaps some young folks who never knew about the wonderful original may have been inspired to check it out.
The original Alec Guiness "Ladykillers" was one of my father's favorite movies. (We're Americans, by the way, so this British movie was a "foreign film" for us.) It came on TV often enough in the 50s and 60s, and we watched it together several times.
When I rented the DVD recently, I was shocked and amazed to see it in color! Since we had black-and-white TV only back in the days when I saw it so many times, it never occurred to me that the theatrical version would have been in color (and of course I had never seen it in color).