Went to Central Kino yesterday to catch Weltverbesserungsmassnahmen (World improvement measures), a documentary-style movie following nine private initiatives trying to make the world a better place — including Ampel e.V (training car owners to respond better to traffic lights), Privatinitiative für Äesthetic (sorting parked cars by colour) and Aktive Krankenversicherung (people training to perform surgery in order to save on health insurance).
I found it a tad too long as the points made were, however funny, pretty simple, but the idea is great. The site accompanying the movie has more ideas for improving the world, most of them not as funny as the ones featured in the movie, though.