Made in Dagenham (2010, Nigel Cole) is a dramatization of the strike that brought "the Equal Pay Act 1970, the first legislation in the UK aimed at ending pay discrimination between men and women, and the first such legislation in the world".
While you can read more in wikipedia and your history books, here you have a very nice and uplifting version. It shows the tensions that collective action creates (and sure created when striking wasn't something that feminized professions did), and the overt discrimination, patronizing and economic exploitation to be experienced by women that led to the strike. Even more, a prominent place is dedicated to our ever alive foe of second shift and the double standard that is expected from working men and women. Nevertheless, there are also pretty dresses 60's dresses, the spirit of female friendship and solidarity, and happy ending*.
Made for those Friday nights when your drive for activism and feministing is down and needs a boost. Made in Dagenham will do the job.
* Well, the ending is relatively happy as in the EU28 we are still some 16% on average below the male wage (and some more in US and other places), see the chart for 2012 data below.