Two well made and free to download films on climate chaos.
Wake Up Freak Out (12) http://www.wakeupfreakout.org
Brilliantly made and informative animation about the science of climate chaos. Also, available in many languages.
The First Wave (26m) http://www.engagemedia.org/Members/LBurke/videos/The_First_Wave.mp4/view
Unfortunately, climate change isn´t some far away thing that may happen, its happening. The First Wave’ is a documentary about the first climate change refugees.
The People of the Carteret Islands, (just north of Papua New Guinea) are the first people in the world having to leave their whole Islands due to the rising sea level.
(Note option to download hi-res screening version underneath the embedded video player)
Both videos combind would make a good film night and, as they both together only have a total running time of just under 40 minutes, would still leave plenty of time to chat bollocks about climate chaos afterwards.