The extended take is a cinematic hire-wire act that pushes the director, actors, cinematographer, art department, sound design, and every other department to their limits. They take a very long time to set-up, and are very easy to mess up. The longer the take, the more pressure is added to get it right.
This list is, in my opinion, the 20 greatest extended takes in movies. I intentionally did not make reference to movies like TIMECODE, RUSSIAN ARK , PVC-1 , and NOKTA which are products of the digital filmmaking age, features entirely shot in a single take. I believe those movies are a genre in and of themselves and deserve a separate discussion.