Directly editing the movie files also works. (all .bik's)
Just rename them or move them to a backup folder, the game won't care. Just be sure to put them back before an update, as the game seems to redownload them all again if it doesn't find them at those times.
I have to do it this way, as I use a small java program that limits FPS to 30 in all of my games (no noticeable quality drop, in return I get to run all of my games max settings without my GPU exploding). It creates a .bat file that runs the game, so I can't use /skipintro.