The Very Bad Film School is a one weekend film challenge started earlier this year by Tan Chui Mui with the strong belief that the only way to learn how to make films is... by making films. (which I don't disagree)
There are different challenges in each session initiated by different filmmakers, and usually ends with participants making a short film in a day. These sessions include David Lynch film marathons, listening to experimental music from the past decade, lectures etc.
Last weekend was James Lee's challenge, and it's a series of challenges that truly mirror his own philosophy as a filmmaker!