If you are like me and does not have a good sound system connected to your PC or TV, you are likely to turn on the English subtitles when watching a movie.
If you download your movies or TV series via bittorrent, you might want to get the subtitles to go with them. I have discovered this website called Opensubtitles.org, which claims to have the largest database of subtitles around. The website is only a couple of months old, but already one of the most popular subtitle resources. It also has subtitles for different languages.
To view the subtitles, first of all make sure that you have DirectVobSub installed in your PC. Then, all you have to do is to download the subtitle file (which normally has a SRT file extension) and put it in the same folder as the AVI movie file. Note that both the SRT and AVI file must have the same name (eg. movie.srt and movie.avi). When you play the AVI file through Windows Media Player or Media Player Classic, the subtitles will be displayed automatically.
The following are a couple of other sites which you can get your subtitles:
http://www.kloofy.net/ (asian movies)
Hope this tip is useful. Enjoy.