, born 6 April 1947
, USA. He is perhaps best known for playing Clifford C. Clavin Jr.
, but before that he appeared in Superman
I and II as "Controller" and in Star Wars
: The Empire Strikes Back
as Major Bren Derlin.
He later lent his characteristic voice to the slotted pig Hamm in Toy Story and Toy Story 2, and to the circus flea P. T. Flea in A Bug's Life. He's also guest starred in these tv shows: Sister, Sister, Caroline in the City, Sabrina, the Teenage Witch, Touched by an Angel and of cource the Simpsons, the last in capacity of his Cheers character.
Appearantly, he and his co-star from Cheers George Wendt (playing Norm Peterson), is currently involved in a Supreme Court dispute to prevent their Cheers characters from being abused in commercials for airport bars.