If you need Subtitles for a movie, or a TV-Show, then visit this site. It's the one I use, and it's the best one out there in my point of view.

It gives fast English Subs, and maybe 1 day later Danish subs, which is what I go after

Else if I can't find my subtitle here, I just search google, but that site is my #1 search

http://www.subscene.com