March of the Penguins

Luc Jacquet's 2005 French nature documentary about emperor penguin breeding in Antarctica earned $127 million worldwide -- an almost unimaginable figure for a nature documentary -- and won the Academy Award for Best Documentary Feature. Narrated by Morgan Freeman in the English version, it brought the plight of polar ecosystems to tens of millions of viewers years before climate change became a mainstream political issue, helping establish the template for emotionally resonant wildlife storytelling.