I'm keeping this one fairly simple and broad. Any films directly from a Catholic perspective, any films made by Catholic directors that deal with faith issues, any about Catholic saints or Catholic history, any about Catholic characters where that seems like an important part of the plot. Also, just about any movie with major characters who are popes, bishops, priests, monks, or nuns. But I'm not looking to be totally comprehensive here: tiny amateur movies that no one's ever seen don't need to be included, nor does every random TV documentary with a Catholic subject. And while plenty of these films are critical from various angles, movies that are entirely about trashing Catholicism in extreme ways are generally excluded. Also pornography--I'm not putting a bunch of nunsploitation films on here.
Otherwise, it's just a big, long, chronological list. Use as you see fit.