Don't let a lack of subtitles detract from your enjoyment of a movie or television show. Visit AnySubs and grab a set of subtitles.
The most obvious reason for using subtitles is understanding a movie or show filmed in a language you don't speak. Another great use is for understanding soft spoken dialogue without having to crank up the volume—I discovered the value of this while trying to watch Lost without the shifts from soft whispering to giant explosions waking up the entire house.
Anysubs catalogues subtitles in multiple languages for popular movies and television shows. You can use the service for free without registration—which is only required for uploading subtitles, not downloading them.
If you'd like to permanently embed subtitles into a movie you can use previously reviewed DivXLand Media Subtitler to so do and for more information about subtitles and applications you can use to work with subtitles, check out how to add subtitles to any movie or television show.
Have a favourite subtitle search engine or tool? Let's hear about it in the comments below.