This docu-movie was originally in French-audio, and known as "Marche de l'empereur, La", and the penguins were given dubbed voices (of children) -- very delightful and so much more room for the audience to relate to... The narration was in French.
Then came the English dub, with Morgan Freeman narrating, and this brought international recognition for March Of The Penguins.
This was followed by dubs in Italian, Danish, and Japanese.
Now comes the docu in Amitabh's voice!
http://www.indiafm.com/news/2007/03/23/9155/index.html