I Got A Phone Call From George Miller [the Director] Asking Me To Play This Role. We Sat Down And He Showed Me On His Computer A Documentary-type Montage Sequence Of Real Penguins Swimming, In An Esther Williams Synchronized Sort Of Way, And Doing Things I Have Never Seen Them Do. Then He Explained His Vision Of The Film, Asked Me To Read The Script And To Voice The Character. I Was Cast A Little Bit Later, And He Let Me Do The Singing As Well!