Not too many half naked men on the covers, but books I love that others hate are movie novelizations. Especially novelizations of low budget horror or sci-fi movies, where the author isn't hampered by cheesy sets, dodgy special effects or subpar acting. Sometimes the book will contain scenes or background details that just couldn't make it to the film for one reason or another.
Alan Dean Foster made a cottage industry of novelizations back in the '70's and '80's.
But my favorite is when there's a mediocre movie that has a surprisingly excellent novelization.
The Car and a movie with the bad title of
The Boogens are both watchable. But their novelizations were well written, suspenseful books.
luckily I have a friend that converts novelizations for fun, so my Kobo is well stocked with them.