Found an article about a search engine designed just for those times at a blog that I read frequently; cybernetnews.com (they blog about various things that happen around the Internet and computer world in general).
The Search engine is called Subzin, and can be found at: www.subzin.com. You even get to know at what time in the movie the quote can be heard. You can also chose to list all quotes, which means you can rather easily find the whole conversation surrounding the quote in question.
There’s not much more information about the movie itself though, but they link to IMDb for that, using a small image at the top of the thumbnail of the movie poster.
Personally, I can’t say that I ever needed to find out what movie a quote came from, but I’m sure there’s uses for it.
