That brings my collection to a grand total of 14. The others are Out of Africa, A Room With a View, Contact, Pan's Labyrinth, Lady in the Water, Signs, LOTR: Fellowship of the Ring, The Mummy, Ghost, and 50 First Dates.
Why collect them? Well, film posters are an art all on their own, but the main reason I like having them on my walls is because I love stories, especially ones that in some way reflect the truth of the Story. Most of the ones on my walls do that in some way or another.