"Master of the Universe" trailer

YouTube link.

Not to be confused with the "Masters of the Universe" fantasy, this is a documentary about the perilous state of interconnected global financial systems that rely on complex derivative instruments, from the viewpoint of a retired German securities trader.  Very sobering, though not fearmongering.  I don't know if the full-length (88 minute) version is accessible online; I found the movie in our local library in a version with audio auf Deutsch with English subtitles.  Released in 2013 and based on an earlier interview, but the subject matter is not out of date.