he is best known for his role as cliff clavin in "cheers" and for his role in all of the "pixar" animated movies which includes; hamm in "toy story", "toy story 2", "toy story 3", "toy story 4" and ', p.t. flea in "a bug's life", the abominable snowman in "monsters, inc.", the school of moonfish in "finding nemo", the underminer in "the incredibles" and in "the incredibles 2", mack the truck in "cars", "cars 2" and in "cars 3", mustafa the waiter in "ratatouille", john in "wall-e", tom the construction worker in "up", gordon the guard in "brave", the abominable snowman in "monsters university", fritz in "inside out", earl in "the good dinosaur", bill the crab in "finding dory" and as juan ortodoncia"' in "coco".