I let iTunes manage my Music folder but hate how it always copies the file I add into the corresponding folder. It would be much quicker if it just moved the file, but I guess it would confuse some people. Anyway, I found that if you move the movie file into the Movies folder and then add directly from there, iTunes adds the file without having to copy it. It will even move it and rename as it needs. Speeds up adding TV shows I ripped from DVD's over-night. Every little bit helps.