March of the Penguins
In 2007, a direct-to-DVD parody written and directed by Bob Saget called "Farce of the Penguins" was released. It is narrated by Samuel L. Jackson and features other stars providing voice-overs for the penguins. Although the film uses footage from actual nature documentaries about penguins, the parody was not allowed to include footage from "March of the Penguins" itself.