My guilty pleasure is movie tie-in novels. Hey, they’re not great literature, but I like having a few details filled in (and it’s always fun when they changed the movie but not the novel).
I recently read Rogue One by Alexander Freed. That movie, while fun visually, is trying to fill in so many plot holes between the Return of the Sith and Star Wars: A New Hope, that it really helps keep the characters and plot actions straight, while providing some motivation and background for some favorite characters (Mon Mothma, anyone).
Another favorite worth reading is Fantastic Beasts and Where to Find Them, the screenplay written by J. K. Rowling for the latest Harry Potter universe movie. Again, it’s nice to revisit the characters, (anyone but me really enjoy Kowalski, the friendly would-be baker?), learn about the beasts, and hope the story will continue – of course it will, we would read J. K. Rowling’s grocery list!
And of course, some movies bring life to favorite novels. It really helps to read Tolkien’s Lord of the Rings before you see the movies, both the screen versions and book of Jane Austen’s universe (Pride and Prejudice, Emma, etc.) are enjoyable, and it’s a toss-up which is worse, Patrick Stewart in Moby Dick or actually wading through Herman Melville’s masterpiece.