Always liked Frank's work on transformers when I was growing up.

http://en.wikipedia.org/wiki/Frank_Welker

Franklin Wendell "Frank" Welker (born March 12, 1946) is an American actor who specializes in voice acting. Due to the large quantity of films he is able to work on in a given year, Frank Welker had been the highest grossing actor in Hollywood up until October 2011, when he was surpassed by Samuel L. Jackson.[1][2]