How to find a movie by description

Hi! I am trying to remember a movie I saw when I was younger late 80's early 90's. I can remember only about two details from the movie. One major detail is there is a teddy bear (some kind of stuffed animal) with diamonds hidden in it. Another is a guy and a girl, one of whom is wear a black hat,...

I watched a movie when I was a child. I can't remember to much. It starts with a boy, 'in real life' walking next to a river. He falls in and then the movie change to animation, where he explores the under water world.

I saw a movie in a drive in not even twenty years ago and I can't remember the name. It is about some guy who has ghost friends. He scams people by having them haunt a house and then remove them with a vacuume cleaner devece. There are murders and the serial killer marksthem with a number carved...