In the Shadow of the Moon (2007)

David Sington's film interviews the surviving Apollo astronauts — Buzz Aldrin, Michael Collins, Alan Bean, Charlie Duke, and others — now in their 70s and 80s, reflecting on what it meant to walk on another world. Michael Collins' wry humor steals the film: orbiting alone while Armstrong and Aldrin were on the surface, he describes himself as "not lonely but aware." The 35mm NASA footage is remastered beautifully, but it's the astronauts' faces — the wonder still visible decades later — that make this essential viewing.