How many movies have Dan O'Bannon and Terence H. Winkless collaborated on?

They have worked on 1 movie together! Their first movie together was Shock Value: The Movie — How Dan O’Bannon and Some USC Outsiders Helped Invent Modern Horror (2014) and was their highest rated movie together. They have not worked together since Shock Value: The Movie — How Dan O’Bannon and Some USC Outsiders Helped Invent Modern Horror (2014).