I'm inspired to ask by another thread.
Restricting myself to those I sat right through and didn't turn off/walk out of, I'd like to start the roll of shame with
Braveheart
Pretty Woman
The Postman Always Rings Twice (the Jack Nicholson/Jessica Lange remake not the original)
Top Gun
Beetlejuice
Another week, another Tory MP sex scandal!
Nicola Sturgeon’s husband Peter Murrell re-arrested over SNP finances.