Passive Passion is a great 20 minute long documentary about the German Passive House energy efficiency standard. It looks at the roots of the design standard in Germany, and gives a bunch of examples of implementations in Europe, from single family homes to row houses, apartment buildings, public housing, office buildings, etc. Talks about what makes the standard work: airtight building envelopes, super insulation, no thermal bridging, heat recovering ventilation. Also looks at a few builders and designers in the US trying to popularize these methods, and do it cost effectively. Clearly it’s possible, we just have to decide to do it!