The first that comes to mind for me is The Breakfast Club and I hope it never does have a sequel or remake
The Princess Bride is another good one
Edit: another one of my favourites is Wall.E, my favourite Pixar movie. There are also several other Pixar movies that don’t have sequels or remakes yet
I think he was talking about this when 9 was released.
True, it’s been talked about probably since District 9 came out, but in recent interviews he says there is a partial screenplay written but is just wrapped up in Oats Studios atm