Atlas Subtitler makes it very easy to download subtitles in any language for a whole series of videos. It supports Drag&Drop and can even shift subtitles in a part of the film. It can also adjust to unequal speeds.
Open Subtitles FlixTools - The easiest way to download subtitles for your movies. Download matched subtitles for movies and TV series, convert videos with multiple subtitles to iTunes, detect and edit video iTunes meta-data, synchronize subtitles