Go ahead and use it. If it's under fifty words, there is no chance of there being a problem (the chances having been very remote anyway)--assuming it isn't a trademarked name that you are slapping on your own product as the name of your own product. Beyond that, the movie folks would kiss you on both cheeks for helping to make their phrase a household saying--and thus immortalize their movie. (e.g., "Show me the money?"; "You had me at hello.")
Last edited by sr71plt : 11-29-2012 at 03:23 PM.