The Five Obstructions is a 2003 Danish documentary film directed by Lars von Trier and Jørgen Leth. The film is conceived as a documentary, but incorporates lengthy sections of experimental films produced by the filmmakers. The premise is that von Trier has created a challenge for his friend and mentor, Jørgen Leth, another renowned filmmaker. Lars von Trier's favorite film is Leth's The Perfect Human, and von Trier gives Leth the task of remaking The Perfect Human five times, each time with a different "obstruction" imposed by von Trier.