We talk about gun movies a lot on this blog, so let me tell you about a website I stumbled across recently: the Internet Movie Firearms Database. It is, simply, Wikipedia for guns in the movies. Pick a title, and you'll find a listing of every last gun used in that movie, along with stills, a little about each gun, nitpicking of errors, and so on. Or, you can look up a gun, and find out what movies it was in. Following the Wikipedia model, the imfdb is cooperatively written and edited, so if you don't find what you're looking for, you can write it yourself. If you find an error, you can edit it.