Check out the short film, Wanderers, by Swedish animator and digital artist Erik Wernquist, that uses Carl Sagan's voice to provide narration.
Wanderers is Wernquist's vision of what our future in space might look like using "digital recreations of actual places in the Solar System, built from real photos and map data where available."
Sagan's voice, who passed in 1996, is pulled from old audio of Sagan reading his book, Pale Blue Dot.
Erik Wernquist also provides an explanation of the imagery below.
You can check out more on Wernquist's website as well.